Hertz used to have a place up in Raleigh on US-70 a couple of miles from Crabtree Mall. I never got a Mustang from them, but we did buy a 6 month old 1999 Pontiac Grand Am with 18k miles from them and it was spotless, no issues. My little brother got a 98 Prizim from there and it was the same way.
I'm not sure about getting a high performance car from a place like that, though. Really only because of the way people use them up (constant hard acceleration, braking, etc). I'm not saying I wouldn't do it, but it would give me pause, anyway.
Hers:2012 Mustang GT Premium,6M,Kona Blue Exterior/Charcoal Interior, 400A, HID/Security Pkg ,Comfort Pkg.
[COLOR="DimGray"][B]His: 2014 Mustang GT Premium,6M,Sterling Gray Exterior/Charcoal Interior,400A, Reverse Sensing/Security Pkg, Comfort Pkg SMR# 3635