ive built at least 10 systems in the last couple months, i used the a7v133 in all of them. (fast & stable) and didnt have a problem with any of them.
before that i built 3 systems with the old abit kt7 (kt133 not kt133a) one worked perfect, one was pretty good but some minor problems, and one had to be returned, (defective board) and the new board also had some minor stability problems.
based on that ive never bought, and never will buy a abit kt7a.
side note: i loved my abit bh6 mobo