I would agree. I have Flowmaster 44s on my 5.0 stroker Mustang. Sound good. Have OG two chambers on a 65 Galaxie with 390, huge cam, headers, and 3" exhaust. SOUNDS great. On a 60 Ford 300 I have two chambers, its a stock 292, sounds good.
On my baby 64 Tripower car, I have Magnaflow Magnapacks, sounds like pure heaven. My wifes GT has full size magnaflow sounds great. On old 01 Cobra (same motor as our cars) I had full size magnaflow, sounds sexy as hell. Same with an old 00 GT.
I am on a super budget since my Mark is just a save a friend project and keep miles off of my truck.
I am allowed to talk smack since half of my cars have flowmasters... Magnaflow is FAR superior to flowmasters. Sound is taste so you pick which you like better. Construction is fact and my magnaflows are put together way better than my flowpoops. They are straight through. So you will have better flow and you will have more sound outside than inside. I made the mistake of having flows on my 00 GT. It was just as loud inside as out.
My sugestion.... if you are keeping the front cats, run magnaflow magnapacs. They are NOT like a glasspack eventhough they look like one. They do not have the loovered perferations like a glass pack. They are much more "tone" than staight pipe.
All though..... for $20-30 any muffler shop will elimiate your mufflers and replace with 2 or 2.25" pipe.... That sound great too.
EDIT: Sorry for all the misspelling. I am typing with one hand since I have a sleeping kitten on my other arm.