Let's see, I had an '89 SHO MTX in undergrad, then bought a '94 SHO MTX for med school, then just sold a '97 SHO (bought this year with 9700 miles) to buy a low mileage '99 CSVT---so I have a fair objectivity to throw in an opinion.
From my experience, I'd take a new MTX SHO over a new CSVT--but you can't find nice condition SHOs like you can a CSVT, so the CSVT is a better choice now.
SHOs are better than the CSVT based on engine (those SHO motors rock when the secondaries open :drool: ), size, sound system. The CSVT is just a step behind in power, but is newer, looks better, handles better, and has all the upgrades available I'd ever consider. Seats are a wash but I'd give the nod to the SHO for the adjustable side bolsters. CSVT shifts smoother and gets better MPG and the factory exhaust sounds very good.
Reliability, thats debatable :shrug:
The V8 SHO just never had the original spirit of the original SHO but it was a very nice cruiser. If they offered a MTX it would have been a great car, you could tell the auto held it back big time, even with the SCT tune I tweaked.
Hopefully one day I'll have a nice 3L, LSD, and a few suspension upgrades to make the CSVT much better than my previous SHOs.
-J