I love my CVR 12.

It's pretty loud, but much more accurate than the HX2. Dukk's right it does stink when pushed hard. But whatever, a 572 Ford running on AV doesn't smell like cupcakes when pushed hard either(I prefer the 572 smell anyway)

I've yet to hear the 7500's. But I actually like the CVR better than the L7 when it comes to tonnality and accuracy.