Quite a bit of real world use over at the bullpup forum on AR15.com. http://www.ar15.com/forums/forum.html?b=6&f=43
I do read gunblast. Jeff Quinn seems like a nice guy but all his reports are glowing. I've never seen him say anything even remotely close to "constructive criticism" on his reviews. I think he said he only reports on stuff that meets his standards...I have 95+ gun and like most of them...but I can tell you what I don't like on all of them also.
Seems like the reports of guys with 1000+ rounds through the RFB are fairly positive. One guy who has 1500+ rounds through his has one of the plastic parts broken...don't recall which one right now. They seem to be pretty reliable feeding and extracting. A lot of people say that they wouldn't trust a KelTec product in a major caliber but so far the rifle seems to be working. Personally, I like my KelTec PF9. It isn't refined but it isn't meant to be.
