I've got a standard Camelbak copy, and it's pretty good, but I was recently in a Nike store and saw Nike's version.
The cool thing they have done is to make the reservoir shaped like a long elipse, so that where the tube joins the reservoir, it's very narrow. So you get to drink those precious last few drops.
Well, that's the theory. I haven't tried the thing in practice, but it looks cool!
This was in the US, so I guess it will take a while to make it over to the UK.
More details
Price
70
Evaluate this review
How helpful would this review be to someone making a buying decision? Rating guidelines
This product has not yet been reviewed. 
