Octane 20

Any thoughts on this? I need to get a new hydration system for all day rides and mainly commuting(needs to be 23+ litres as take change of clothes + waterproofs if needed, lunch, tools etc). Any experience with the rest of the octane range? This bag is only 500g without hydration bladder so really light and it is made of 70d ripstop nylon(although not sure how strong this is) I have decided against a messenger bag or panniers so after a good backpack I can commute with everyday that gives good support on my shoulders(ie spreads the load so I don't get a bad back/shoulders), big enough for what I need and lets my back breathe. I was looking at the camelbak Hoss which is about £20-30 ish more but has their new dynamic back system thing which holds the bag off your back by up to 2 inches(apparently) and ensures the hydration bladder doesn't push into the main compartment. The back ventilation on the other octane's look good but can't really see it properly on this one as this seems to be the only picture available. 1 thing I like about the octane is that I have found it for less than £60 when the hoss(my original preferred one) is at least £90. I'm happy to get the octane(which has bigger cargo anyway) if it does what I need it to. All advice appreciated.