The Enzo as standard sounds like a Fiat Uno (ok, maybe I exagerate)
I was at a Ferrari outting this saturday at the Dijon Prenois track, very nice.
The Stradale sounds unbelievable, really out of this world.
There were two Enzos, one yellow and one red (the yellow one belonged to the guy who owns the Stradale too, cool guy! )
The red Enzo had the standard exhaust, but the Yellow one had a similar system to the PSE, with a switch on the dashboard so that the exhaust can be fully open and my, does it sound brilliant (although IMHO still not as good as the Stradale).
I've got some pics, I will post them soon.
In general, the CGT sounds much more like an F1 with a high pitch voice similar to the 355 past 8000 rpm, the Enzo is more metallic, sounds more like a Modena only more sophisticated.
I had a ride in the Maserati and was a bit disappointed my its very nervous chassis...
I went there on sat morning with the 996 and the SL following two 355 and an F40LM road version, what a sound track as well. Very impressive on the open road! Jean-Christophe, if you check this forum, congrats on your F40, she is a beauty!