I would doubt the C's is worth $80 more than the one SupraSport sells. I've shifted both and the difference is negligible.
I've also shifted the "cut" shifter" and can't stand that (I'd rather stick with the stock shifter than cut mine).
I bought the one SupraSport sells and it is GREAT! You won't regret that decision.
For those that say "the shifter is too tall". Take a look at the cars with the shorter height shifters. Pay close attention to how their center console does not dip down like ours does. Their shifter isn't "short" their console goes straight across making the appearance that the shifter is short. Make a custom center console and you'll get the same effect.