So, after a few days with more than a 20w vamo, and a higher VG juice than iv had for 18 months which was 20% vg 80vg before for the past 18 months, heres my conclusions.
Was it worth paying the extra money for a decent box mod.
Yes, I got lucky and got mine second hand minted though! but.. - yes. 100w, pleanty to play with, the chip is rock solid, does everything Pefect. The sigelei box mod is fantastic, clean as hell, feels fantastic in my hand and I never thought id ever change from a tube/torch style device, this thing is fantastic. Fantastic fantastic fantastic!!, and I especially love the battery cover, it just clips into place with magnets, and they are strong as hell, don't even need the screws. Everything just looks flush nice and clean, dirt doesn't lay anywhere on it or stick in any places, it's just a really sweet solid well built device
30g/28g kanthal, who needs thicker wire? (im now on 24g)
Every one does, provided you have the mod to power it, Christ all mighty the amount of vapour you get off it coupled with a device to power it. Iv dropped my nicotine down to 2mg now down from around 6mg, and I still get the hits like I used to and the nicotine effects because theres much more vapour being produced.
does vg over pg make a difference?
Sure does. too many reasons to explain, but number 1 being, dense tasty clouds.
tank vs rda.
Not going to lie, iv got my little protank on a itaste vw3 which iv used for 18 months, I use that when im outta the house, I couldn't carry a big box mod in my arse pocket all day. well I couldn't carry any vaping device in my arse pocket unless you don't sit on your arse at all dur in the day..

but you know, the smaller device the better for at work and out and about.
But at home? treat your self to a dripper, infact no at home save money drippers are cheaper and a lot lot less hastle but you obviously do need to "fill her up" more often, few drops and you get a fair few good solid blasts of absolute Pure vaping perfection, rather than a, oh god is that coil starting to taste foul, meh gotta drain it and if it is going a bit crusty, all the rest of the liquid in the tank is wasted because its contaminated with the bad coil.
BATTERYS!... I can get cheap 5000mah batterys on ebay for £3!..........
Yeah you can, but they last 2 hours of vaping and take 20 mins to charge brand new.
Pick up a decent battery that cost £12 each, I thought there was something wrong with them when they took a few hours to charge,
That's because there actually 2500mah, ACTUALLY 2500mah batterys, and today at 40W vaping for 17 hours iv used 25% of the battery.... That's 75% still remaining!! And I chain vape like a chimney!
Ebay 3quid 5000mah batterys, more like 50mah, save your self a Molotov cocktail in your hand for a tenner extra.
Dual or single coil?
Iv always loved the single coil, still now love the idea of a perfect single coil doing the job, but in a dripper build for two coils with the terminal posts in the middle, one coil looks lonely stuck there on one side of it.
Vaping wise, for a tank I say single all the way there just isn't the space for a dual coil unless the coils are tiny, but if you do make a dual work and you like it then I guess it's all good, but in my experience I don't really like a narrow coil, the juice just can't get into it so why make your coils smaller to fit another one, the wider the coil the better more juice getting into it the better.
And then comes the dual which I use in my dripper, damn almighty, If you've never done a dual before and have a huge single coil @ low ohms, imagine twice the vapor being produced that's the only quick way I can explain it simply. Clouddsssss.
So single coils for small tanks etc like a pro tank mini or other mini device. if there's room then dual.
Dripper. Dual dual dual! Might even make a quad tomorrow to try
Airflow
Okay, you got a device with adjustable airflow, If you open the airflow fully, is it just air you in hailed? Then imagine if all that air you inhailed was dense thick vapor, well read all this post put it all together to fill that air you just inhailed with vapor, also if you've never had a dripper like a mutation x before which has about 50% more airflow than say a kayfun tank, then that's 50% more dense creamy vapour on top of what your able to pull through your device now. It's superb.
But really do aim to get the most vapour production from the amount of air flow your device and provide. At the end of the day, it's like a powerful car, will only go as fast as you press the pedal. So if your taking long drags to get the vape you need, why not just have the same amount of vape from a one second blast and have tons and tons left over for if you take the same length blast on it and output a lot more vapor.
Do I need the extra clouds?
In a way no, I didn't.. Didn't need anything else than what I had, if your happy with it enjoy what you have, I know I did, I just wanted to get into vaping more because I love making coils and messing with stuff and being creative. Coil making is a art after all right?

Once you experience it, nothing else will do. Might not be a cheap road to experience it, but if you know someone with a hand held fog device (a dripper + high powered mod), take a few pulls on it you will love it, if its set up for your kinda vaping that is.
I have my old trusty protank 2 mini and itaste vw3 set up to make the absolute most amount of vapour possible for such a little device, I thought it was a lot... It isn't.
The way I can only describe what it feels like to have so much warm smooth vapour that's full of flavour in your mouth is, well.
Grab your device now, take about a 3 second pull and no longer. do not lung inhail, just pull it into your mouth and hold it there for a few seconds, now, if your mouth feels like you have that taste and feeling you remembered having when you was a kid and you was told you could buy a expensive double ice cream cone from the ice cream van, and how tasty the vanilla ice cream was 20 years ago compaired to the whipped up foam they serve now a days. if you get that feeling. then you know you've got your vaping experience right.
If when you take a big pull, and its just like flavoured fresh air with a bit of a kick to it and the clouds like a bit of steam like when you sneeze and forget to shut your mouth, then you haven't experienced the potential of vaping.

just my few sums up of what Iv experienced. This is not a guide in any way shape or form, just a few words of my experiences, most of which are what you will read else where, it's only just by experiencing it for my self to realise how fantastic it is and that what people are saying that you read is true.
P.s had a few beers tonight as im snowed in up here in the dales ! So hope all my writing made sense

also other people's views might be differenct as vaping is tailored built to your self but a lot of thing I have said though are what other people explained like I said. I didn't know how good it could get till I tried it!