Liked the old version better
I bought this bladder to replace my old one because one of the plastic pieces in the hose connection broke off. There are some things I really like about this reservoir, and there are some things that are not so great.
Easy to clean.
The bite valve. I like this so much better than the old one (which I actually ended up swapping out because I hated it so much).
I hate, HATE the new closing system. It's difficult to use when refilling at an aid station. I much preferred the old version with the channels to help you slide the bar across. And the bar isn't connected to the bag, making it easy to misplace. The ziplock is nearly impossible to fully seal when you're tired or in a hurry.
The hose. I cannot get it completely dry. Luckily, I use nothing but plain water in my bladder. But if I had Tailwind or something similar, I'd be very concerned about mold.
The change in the sealing system alone makes me much prefer the old version. The bite valve is really nice. But I'll take it (or swapping it out) over this new version.