In reply to llanberis36: For that price you could buy 3 cheaper sacs for the different activities. Personally I wouldn't spend that much on a sac (unless I'd won the lottery) except for something like an expedition; where having the correct/best kit could make more of a difference.
If you go down the multi-sac-route I would recommend going to Decathlon - their own brand tends to have quality "one level above" its price range.