First off, sorry if this has been done before, if so, just show me where and we can close this.

Other wise, I am going to upgrade the exhaust on my car [1987 Ford Thunderbird LX 3.8L V6] and I had always thought I would put a 40 series flowmaster on my car, but I took it to an exhaust shop and the guy recommended magnaflow hands down. I'm looking to increase my power, but I also want my car to sound good. I don't need a show-boating loud exhaust, just as long as it sounds really good. So what do you guys think as far as your experiences with the two?

[and if it matters I myself am doing a catback exhaust. Is $650 for installiation and parts for a magnaflow exhaust a good price or am i getting ripped?]