Like i said before i have had very few primer problems with mine and i still use the old primer units. I've read about indexing problems several times as well as priming problems and there is absolutely no way one should have indexing problems with the press once indexing is set, but mine was not set from the factory and that would have been a problem for someone not following instructions.
I don't however discount the fact that it's possible QC is horrible on the machine as it's hard to believe that so many people are incapable of comprehension. I also don't believe for a second that the LM is anywhere near the same class as a Dillon 650 NO WAY, but the instruction sheet say's it's the finest reloader made.
It still does the same thing for a whole lot less money. I would in no way be able to afford caliber changes on a 650 for the calibers I'm set up for with my LM...heck i couldn't afford them for a 550 either.