I would fall into the "con" category, which maybe old school. I4's at 200 brake best suited to Se7ens and megabrake V8's belong in Cobras/Ultimas. In the 70's one of the first V8 se7ens was born as the "Kiki" - it looked positively dangerous, but sure the application has improved since then.
While some often enjoy bragging rights when supposedly embarrassing a Porsche at the track, I have often seen the smile disappear when a shifter Kart does the same the se7en at the same track. I guess it's a case of different strokes....