Ripped the zip off my Blofish on Sunday, want something a similar size, possibly expandable and 2-3 ltr water bladder.

Anyone using the shimano ones?

I use a Camelbak Charge, got it free with an MBR subscription, shop price about £79 so was well pleased with that.
It’s a 10L pack with a 2L bladder, holds loads and the bladder sits low round your waist.
So far no problems with it and it’s really comfortable.

Shimano ones look like you’re wearing a bra.

There was a thread recently where many people recommended Osprey packs

http://singletrackworld.com/forum/topic/need-a-new-hydration-pack-whats-the-best-out-there-these-days

Be sure to have a look at Osprey’s range. I used to love my old Blowfish, but having moved to Osprey a few years ago, I’m not going back!

Osprey.

Just bought a viper 13. Absolutely fantastic. I actually bought it with the main purpose of taking it snowboarding. But it will become my biking one now I am back. I may even get another one for less muddy use.

Pockets in all the right places. Loads of space, and the zip to close the bladder compartment is genius.