Hi
I bought a YETI cool box 2 weeks ago, and I think it's brilliant. I needed a standard (no requirement for power), done a bit of googling and found 2 potential brands YETI & Icey Tek.
I originally ordered the 25l Icey Tek, but the supplier had just run out and so offered me the 33l YETI. I am blown away by how well it works.
As you would expect is not small or light, but a small sacrifice for such an impressive cool box
I got mine from the only uk supplier I could find http://www.coolboxesuk.com/yeti-range/
I hope it helps
By the way it's apparently Grizzly Bear proof