I used a Sentinel TS, Custom 98, and WGP vert cocker with it
It holds more balls, tough.
It jam's easily.
This is by far the worst performing gravity fed hopper I have ever used. It is made well, but that patented "Hi-Flo Channel" is anything but high flowing. I think the channel provides a place for balls to get caught so that nothing can get down the feed tube. Usually if this happens with a VL200, a little shaking will clear it. With this, you have to totally invert the hopper to clear it and then about 6-10 shots later, you are jammed again.
Don't recommend I get a motorized hopper. I have a Halo B on my Bushmaster and have owned a Ricochet AK (works good, just slow...) and an Evo II (POS!) as well. I use gravity fed hoppers on my loaner/backup markers.
I wouldn't recommend this loader to anybody. They still feed balls and are well made, but this product only deserves a 2 at best. Get a Ricochet G2K or a VL200/clone!