Received my small prodiscus (20+) from Journey Post yesterday. The newer model does include 2 water bottle holders, has a rain fly, and comes with one divider.
Took it out and played/practiced for about five hours.
Straps
It is very comfortable to carry. The straps are a bit wider than Grip's A-series (8.5cm vs. 7cm), and spreading out the weight that little bit is noticeably more comfortable. I'm on the smaller side (5'9", 150 lbs.) and was able to adjust the straps optimally. Note that there is provision for larger bodies.
disc capacity
It's certainly possible to get 20 discs in the main compartment, but I only put 18 in to make it easy to take them out and put them in. The mix was 8 DDs, 4 FDs, 4 mids, and two driving/approach putters. I had three putters in the quiver, and 2 utility discs in one of the pontoons. If pressed to max out, I could see 20 in the main, 4 in the quiver, 4 in each pontoon, and 4 in each of the large side pockets (total = 40).
storage
Since I only used one pontoon for discs, the other held my snacks. One large side pocket held a rain shell, rain pants, and a couple of towels. The other large side pocket held a thick hoodie and more towels (with room to spare). Plenty of storage; however, the small backpack has no provision for carrying a stool and/or umbrella, so I will have to give up one of the large storage pockets for those two when I carry them -- the large pockets are double zippered, so this looks like a viable option.
quality
As noted in previous posts, the materials are top notch. Zippers are large & sturdy, stitching appears to be dome with quality thread, and the finishing touches (by the Fins
) are excellent. I did find about two inch section in one (non-stress) area, where I'll have to repair some stitching, so not perfect.