In reply to galpinos:
> I have a ME Tupilak 37. Far superior to my old Mutant (Gen 2?).
> Pros: Really comfy with heavy load, compacts down well, weighs nothing, pretty much waterproof, stiff back so keeps it shape whilst packing/unpacking, really nice lid/buckle system that is a doddle in gloves, does what it says on the tin.
All that's true. My only gripe is that the internal drawstring closure /extension arrangement can be quite irritating in use; it makes it difficult to insert and retrieve things one-handed and effectively divides the pack into two compartments, which may not really be what you want.
That said, I'm getting used to it and it is really light (which was my main requirement). ME have also been really good about free repairs (after some heavy use involving crampons and lots of chimneys).