I've got an 05/02 AU3 XR6 VCT, and I haven't had a real problem with it yet. Only thing is the brake shudder, but I've been told you really need to go after-market to properly fix it.
Other than that, I heard the AU3s fixed a lot of the earlier minor bugs from the series 1 and 2s, so you should be right!
AUIII XR6 VCT Congo Green, leather, stock!
1969 Chrysler VF coupe, convertible, 318ci, not stock!