The latest issue (April 2010) has a comparison test between the ZR1 and the new 997TT (3.8L 500hp) with PDK and Sport Chrono. The 997TT ran 0-60 in 2.9s, 0-100 in 6.8s, 0-150 in 16.2s and an 11.0 @ 128mph in the 1/4 mile. The ZR1 test #'s were from a previous test where it did 0-60 in 3.4s, 0-100 in 7.6s, 0-150 in 16.4s and an 11.5 @ 128mph in the 1/4 mile.
Now the new Turbo S is coming out with a Turbo S model with 530hp..
http://www.caranddriver.com/news/car...hotos_and_info
An extra $30K is a bit pricey...but maybe in a few years these will be nice to pick up used.
Tom