If you want that "exotic" sound at high RPMs, your only choice is Bassani. Here's my Cliffnotes of the catbacks that I've own and the ones I've heard in person.
Magnaflow--had it before. sounds like American V8 "rice" to me. never had the magnapack version myself, but it sounds like cheap glasspack. relatively cheap. bought mine new for $340 shipped
Bassani--also had it on my car, exotic sound at high RPM, mean rumble at low RPM. expensive as hell. got mine for $600 shipped
Spintech--never had it, but heard it on other people's mustangs, very unique sound, very loud, sounds completely different than others, hard to describe. relatively cheap
Dynomax Race Magnum bullet--never had it, never heard it in person, but have read that it's loud and sounds like a hardcore racecar. relatively cheap
SLP--never own it, have no experience with it
Flowmaster--had the 50 series. the 40 series sounds mean, classic mustang sound, but drone like a mofo on the highway--very little drone with the 50 series, but it's kind of quiet. relatively cheap. bought mine new for $320 shipped
Borla--currently have the Stinger version, sounds VERY MEAN, very nice sound, scares the crap out of ricers, but i'm going to switch to the regular
Borla version soon because i commute way too much and want it a little softer since i'm also getting LT. expensive as hell. got the stinger catback for $550 shipped. recently bought two
borla turbo mufflers (the race version, not the cheap pro-xs version) for $220 shipped
I'm really picky about exhaust sound and I've spent WAY too much money on different setups every since I got my mustang. My best advice for you is to just spend the money and do it right the first time. Go with either Bassani or
Borla, you won't regret it.
I mostly depended on online sound clips and other people's opinions when I bought my various setups. the sound clips sound nothing like what it sounds like in person.
Another exhaust advice I have for you is when/if you want to get an aftermarket x-pipe, you should really consider either the Bassani x-pipe or the SLP x-pipe. Those pipe will give you a lot of room to grow because they're 5-piece hybrid version. Meaning you could easily switch out the cats and switch in the a piece of straight pipe in 30 minutes on your drive-way. Furthermore, with either of these two pipes, when/if you decided to get the Bassani Mid-length headers or the SLP longtube headers, they will bolt up flawlessly to either of those midpipes so you won't have to go to a muffler shop for them to chop up/modify the pipe to fit the headers.
And finally, if you need to know what store/website I bought my past catbacks from for the price I listed above, PM me and I'll tell you. I could just post it right here, but the mods will just delete the web address i post.
