My wife has a Honda, and I have a Honda bike. Both are good vehicles, but her Honda is road-noisy, with less than stellar ergonomics.
I just gave up a 1995 Contour with about 40,000 miles on it when I bought in 1997. I drove over 100,000 miles in that car, and only took it to the recyclers because I inherited my sister's 2003 Chevy Malibu with a bigger engine and 38,000 miles.
That Contour had something wrong in the engine compartment, perhaps the computer needed replacing, but we'll never know because I couldn't justify putting any money into it. Otherwise, it still ran like a Timex watch, and was a true son of a 1971 Thunderbird that still ran well, but the coachwork and bodywork were shot.
Both the Mustang and the Accord are attractive cars, and both will probably give you years of faithful service if you take care of them. Which is the better mechanically would be answered only if you bought both and carefully ran them as identically as possible.
The Mustang, particularly a coupe in Torch Red, is of course FAR sexier.
