Top Tip! DONT GET PLASTIC OR METAL, both will cause condensation and everything inside will end up damp and rusty.
Had my metal shed for 2 or 3 years now and have not got a single thing damp/rusty, keep all my power tools in there and not had a single issue, also keep my leftover paints and decorating tools in there and they are all fine.
I got mine from Argos when it was on offer and although it did take 2 of us to build it was only a couple of hours or so, make sure you wear gloves though as some of the edges are sharp.
http://www.argos.co.uk/product/6685553
Got my eyes on this 8x6 Keter shed, is it any good?
http://www.wickes.co.uk/Keter-Double-Door-Plastic-Apex-Shed-8x6/p/159334
Had our Keter shed for 8 years now still looks the same as when i bought it and everything is dry as a bone zero condensation.
Are you using anchor bolts to secure the Keter shed to the base?I've got two of these 8x6 sheds, one for my usual shed type stuff and one for the kids to play in. No damp at all, in fact a lot cleaner and dryer than any wooden shed I've ever had. Easy enough to assemble, I managed 99% of it alone, only needing a little help fastening the roof down. I would definitely recommend.
Are you using anchor bolts to secure the Keter shed to the base?
Are you using anchor bolts to secure the Keter shed to the base?

Yeah, I think it is best to secure it to the base as I only have a lawnmower, chairs, few suitcases and garden tools in the shed.No i did think of screwing it down but there is so much weight in there (8 alloy wheels and tyres) that i never bothered.
But if you don't have a lot in the shed it might be an idea to secure it to a base with bolts.
I seem to remember there are cutouts for that purpose in the base of the shed.
Before i had all those wheels in the shed it did move one night with the wind.
If you goto page 35 it shows you the option there.
Download it here http://www.keter.com/en/factor-8x6#collapse7
What screws did you use and I guess I need to use a hammer drill?I've screwed mine down. Just used a few decent screws, no fancy bolts. One shed is on decking and one is one a treated wood frame filled with concrete. We've had some good winds so they might have moved a little without the screws, before they were filled with crap of course![]()

I've never painted my 4 year old wooden shed, it's built with tantalised timber.It's just an old misguided assumption wooden shed owners mutter to themselves whilst painstakingly painting their sheds every year![]()