I've had the 3.55 and the 3.73 and now a 4.30 with a c4 and wouldn't ever change back grant it the 1.5 hour drive to the track at 3600 rpm will suck but it is well worth it, with mine I have never got on it turning but even at a rolling start with a passenger you can pretty much forget about traction but if you take it somewhat easy it will hook and really set you back, so my vote is the steeper the better