There are alot of people who think the 996TT tiptronic is slow and the 959 is the ultimate supercar. well it is a classic and it is rare but if you take out a 959 and 996TT tiptronic to the track... the 996TT wins.
In EXCELLENCE(The porsche magazine btw) for the april ,01 issue there was a road test with the 959 and tiptronic S turbo. The drivers were Danny Sullivan and Kevin Buckler. Racetrack was Sears Point in Sonoma, California.
959
Buckler 1:59.01
Sullivan 1:59.78
996 Turbo Tiptronic
Buckler 1:54.78
Sullivan 1:54.47
Some notes:
1) The 959 had "an OEM hop-up kit consisting of larger turbos and re-programmed Motronics."
2) The 959 ran without catalytic converters. I.e., it wasn't street legal in that configuration.
3) They also brought along a modified 993 Turbo S, with a claimed 530 hp. Its best time was 1:54.58.
so to conclude this...... The 996TT tiptronic S DOES NOT SUCK