I have an o/r H pipe with the Ultra flows and I don't car for sound much. Can't wait to put on my Bassani catted X-pipe and Magnaflow cat back and see what they sound like though.
Indeed, the bullets are the loudest, with the Welded Magnums next. The Welded Magnums really are no louder than two-chamber Flowmasters, and have much less drone at 2000rpm. Here's my car with the 2.5-inch welded magnums and an off-road H-pipe. I'm planning on installing an X just because i like the higher pitched sound that it makes with these mufflers.