I have had my SDK for a few days now. I have cut down on the cigs a fair bit and using the SDK inbetween instead. I was originally thinking of getting another SDK but now I am leaning towards an ego battery/passthrough as I am vaping mostly at my pc and the battery will give more life than my SDK which will become my backup.
I need to get some more cartomisers for the SDK but I have been looking at alternatives to use with the EGO. Would a tank/cartridge be the best next step? I don't want to spend too much at this point so no fancy mods
I bought a 30ml bottle of 18mg Ry4 from safercigs as it seemed like a good deal for a basic liquid and was the same strength as the SDK carts. However, in use it feels stronger. I am finding it easy to get a nicotine od headache from relatively little vaping. I also find it gives less hit than the SDK carts so whether I am dragging harder on it and hence taking more nic in.
I could see that a system/liquid that gave more vapour with lower nictine level might suit me better so I will have to try some lower liquids and find one to suit me.
It may not be the nic that's giving you the headache's, it could be the PG. I have a PG intolerance so can only vape VG or VG - PEG mix, PG does some weird things to me including migraines, have a word with Daz at safercigs, Paula at http://www.vapourworld.co.uk/ or try here http://forum.vapourtrails.tv/index.php
Quick Edit: ... I'm on 24mg nic, soon to be downgrading to 18mg once my 100 ml juice has gone.