The fastest mag times in 0-60 and 1/4 mile times have been with the 7AT but the difference is only .1 sec by those who've done both. The fastest drag times at a strip for stock I've seen was also a 7AT.
edit: at Dragtimes, the fastest stocker is now a 6MT with the next 4 being 7AT's. Of course different tracks, track conditions, yada, yada, yada.......
http://www.dragtimes.com/compare2.ph...ame=Compare%21