Technically one would expect it to be louder.
Yo-dude uses just one straight through muffler while the Bassani uses 2 baffled mufflers.
For that same reason the Yo-dude should "technically" out perform the Bassani or any other system using baffled mufflers or multiple mufflers/resonators (which is everything out)
I would choose the MagnaFlow Yo-dude out of their options. Magnaflow should give the best sound and help cancel out a good portion of the high pitch frequency range better than the other choices (rasp!)
