Okay, so i need some opinions,
i have a 1997 Chevy s10 Blazer LT

Cherry Bomb?

or Flowmaster 40

 

Welcome! Theres a section for exhaust related questions on the forum FYI. But to answer your question- you're the one who is going to be driving your vehicle. Go with whatever sounds best to you. Check out youtube for soundclips of each one. Just my .02 though, I know Flowmasters, despite sounding really awesome, have a bad history of rusting out after just a few years. If you go Flowmaster, pay extra now and get a stainless steel muffler. Or some guys have sprayed anti-rust paint on the welds after having one welded on and thats supposed to help a lot.

 

personally I dont like the flowmasters that much I have only heard them on one vehicle that I liked and that was on a 85 ramcharger with true dual exhaust. I think magnaflow sounds the best. it is aggressive but its not over bearing.
check this video out on youtube he has a hi flow magnaflow cat and a magnaflow muffler and I think it sounds perfect
http://www.youtube.com/watch?v=ZEJ7Tj3-7Uc

 

Beauty is in the ear of the hearer.

 

that's a personal opinion but I do think that magnaflow sounds good.