Backpack water bladder question

[Ricochet]

Has anybody used the Geigerrig Hydration Engine and filter system? I'm planning a back country bow hunting trip. We are going to pack in on horse back. I read a lot of good reviews but I would like to here what you guys think before I buy one. Thanks

 

[az.mountain runner]

I have the one you can pressure up, nice change, and if you pump it up can give you a good pillow for those midday nap.

 

[Kentucky hunter]

We used the katadyn base camp it worked great last year