Playing Campaigns threw TA and newest patch.

For those who have tried to play all the campaigns threw TA, how buggy is it?  Is it just problems like missions not ending or what?  If a missions want end is there away to watch the missions ending and select the next mission using a cheat code or something.   I was looking forward to getting the retail release of the ultimate edition tomorrow, but the talk of bugs has me worried.  One of the main reason's I was going to get GC instead of Sins was because of the single player campaigns.