This is from memory, so please forgive any innaccuracies. I'm sure others will relay their experiences.
There were several surveys done on this site over the last year or so, and the problems appear to be be few, but vocal. The ambi thumb safety sounds like the major culprit with about 5% of the owners (on this site) having some problem with them. Slide release, hammer and sear, barrel bushing issues have also been reported, but at a lower incidence than the thumb safety.
In general, customer service definitely gets a pretty bad review. I won't use them ona 1911 like this unless there is some major malfunction. I prefer to do the work myself or have one of the local 'smiths do the work I'm not comfortable with.
I have over 1200 rounds through mine with no issues. It is more than accurate enough for my purposes. It feeds all the ammo I have tried from Aquilla IQ to Winchester "white box" and everything in between, ball or hollow point. There are folks with >5000 rounds without problems, and folks whose pistols broke the first time at the range.
All in all, I don't regret buying one. I may not buy another though, lots of competition out there. Looking at the Firestorm for another possible project gun.
All that is necessary for the triumph of evil is that good men do nothing - Edmund Burke