have driven a 172 but it was about 4 months ago so I cant really compare and I havent driven a CUP, personally though for me it was bloody fast enough and had only done 15 miles so I think it will be fast enough for me, but how it would compare on a track or a 1/4, not a clue.
I guess the main thing is that I like it so there is no need for me to test drive the cup or 172 again as im happy.
Although I must confess to having booked a test drive for a CTR on Saturday just to see what all the fuss is about and see if it is any faster. Not going to change my mind, I;m just interested to make my own comparisons and to be able to relate to the arguing that goes on about which is better!