Flowmaster drone solved.

Yeah. That is key. Every vehicle is different. Car make, SB,BB, Headers, Manifolds, Exh diameter, Exh dump, tips, Cam......
That's what makes it so difficult to compare. I met a guy with a SBM at a car cruise and he was running Flowmaster 50's. Sounded real nice and deep tone.
Said no drone but I wouldn't mind a little quieter. Most everyone running Dynomax turbos loves them and they flow nice so I'm putting a pair on the list. I'll be adding headers so should give them a little more volume. I am going to try to do the changes in stages and record sounds and post on FABO. I believe there is a exh sound thread here somewhere. Yesterday I did my first with the HiPo manifolds, 40's and tips.