Help on mufflers vs glass packs

flowmasters sound too hollow/tinny for me, went with a chambered, welded, 18ish inch cherry bomb on my powerwagon, 2.25 duals in 3 inch tail. sounds pretty meaty and solid. nice rumble at idle and had a nice mid-tone bark on hard acceleration, and it doesnt have that annoying pop/ratty sound on deceleration. I cant stand that. the dart i went the el-cheapo route, because i didnt know what i wanted, besides being able to drive it and not get pulled over every 2 miles, so i opted for 2.25 pipe, with an H crossover right behind the trans, into a couple of ceramic-pack units. instead of having a round hole perforated center with glass packing, it has louvers stamped in a spiral pattern, and is ceramic between the core and the main body. they look just like glasspacks, but sound nothing like them. depending on what way the louvers are facing determines the tone, mine are facing toward the engine, so its surprisingly quiet at idle, but turns into a nice low low rumble tone on light cruising, but without the resonating drone sound that makes for a head pounding headache. heavy acceleration and it comes alive and sounds just plain nasty. im a fan.