Don't think I've heard anybody say they liked their blow master mufflers after about the first week. Be a shame to lay out that kind of dough and have to live with something you hate just because you spent a buttload of money on it. Just sayin.
My wife refused to ride with me for awhile unless I furnished her with a fresh set of ear plugs. Now normally I would say win/win but occasionally it's nice to have her go with me. Now, I don't consider my car to be loud but different people have different opinions of how much is too loud. Mine seems to run about 89 decibels at freeway cruise(there's a free ap for your phone). They say that sustained 92db can cause permanent hearing loss. The volume is only part of it. The drone is just plain annoying at any level and Flowmasters are known for it. Besides the fact that on a long drive the noise can really wear a person out. Good to think long and hard before making your exhaust decision.