Around here only the posers buy the flowmasters. They are too tinny sounding. Real off roaders here buy glasspacks, sound better, and cheaper. They don't rust out or corrode around the inlets. I just buy the cheap oval stocker muffler. I love/hate the exhaust sound of a 4 banger. It sounds cool and obnoxious at the same time, but I tend to go through way more gas with a loud pipe. If it's quiet I don't tend to rap it out as much! Especially with the way gas prices are lately!
As for the flame out the pipe everybodys done the turn the key off then back on while driving down the road!!