Love my GT500's. Havent even looked at another exhaust since I bought them 10 months ago. Ive bought quite a few high $$$ parts so cost was not an issue.
My only issue with them is Ford's packaging of them, crappy job protecting the tips. I had to bend out one of the tips that got a little dinged during shipping.
I ordered mine last week from LMT and they looked like they had been opened (inner boxes were not taped closed) and repacked with a stiff cardboard tube around the tips, no dents in mine.
13 GT base, 3.55, Sterling Grey, MGW shifter, BMR LCA's, GT500 AB, silver RTR's, 275/40/19 Michelin pilot super sports, more stereo equipment than I will admit to, more parts to come.