I jumped on the bandwagon for this one.. After all the hype I had to try it out. I didn't go for the full RF chip and everything though. Even on pulse mode this thing can keep up with anything. I did a drop test to see which would win. Against my halo b it easily snuffed it out by over a second. The best part about this hopper is definitely the detachable front. It is a bit hard the first couple of times you do it, but it loosens to the point were eventually you can do it without tools. My friend borrowed it for his electra, and it blew paint all up inside the pulse, wasn't a hassle at all to clean. Took 2 minutes and then I was back in action. The lid was the thing I was most disappointed with. It is hard to get off (compared to the halo b's) and generally doesn't move/snap on as well as it should. I replaced it with a ghetto speedfeed, but the starting lid was a problem. It has a shorter feed neck then the halo b, which might make it a little tight for those with qlocks, and big hands...
Conclusion:
Great hopper, faster, and more easily maintained then any other hopper I've tried. The lid is a disappointment though. For that it gets a 9.5, but it only lets me do it to 9.0.