I own both a Dillon 550 and 650. I doubt at this stage of the game, I'll add a 750, but it does look interesting. They replaced the merry go round primer system in favor of a straight one, similar to the 550. They also have an updated casefeeder. I never had any problem with my 650 case feeder, so I don't know if the new one really improves upon it. I do hope that the new XL 750 operates smoother than the 650 I have. When a case is fed there is a definite jerk. This doesn't affect loading low volume powders, like Bullseye in a .45 ACP case, but with powders that nearly fill the case, i.e. 9mm, it is a problem. I've tried all the usual "fixes" to get the 650 to smooth out, but this still remains. Anyway, here is a preview of the new Dillon XL 750 reloader: https://www.dillonprecision.com/xl750-reloader_8_1_26745.html