In reply to gethin_allen:
Oddly enough I have a pair of both of these. They are quite different (fit aside, which is the most important thing anyway).
The Quests are leaky, not very cushioned at all, nice to climb in, grippy on rock and a bit skiddy on mud / grass
The Hedgehogs are waterproof, plush & comfy to walk / run in, grippy as you like on gravel and crap for climbing.
Both are quite light.
Quite odd that you are choosing between those two, they couldn't be much more different (well, as different as outdoor shoes get anyway).
Hope that's some use anyway - go try them on btw - if you buy shoes without doing that, you're mental.