I had 2 Mustangs too, but right now I have only 1 Mustang. My 2002 Mustang V6 was totalled a few months ago and right now, I am left with only my 2001 Mustang GT. The 2001 GT had only 2,800 miles when I put it on the road in March. I now have 4,500 miles on it.
I've also purchased another car since my 2002 Mustang V6 got totalled. I wanted a much larger vehicle that had a lot more room than the Mustang so I purchased a brand new 2008 Dodge Charger R/T with the Road & Track Performance Package. I love the Charger. It's got a lot more room than my Mustang and it is also a luxury car. You should look at the Charger R/T if you are looking for a luxury car with some muscle.
I also drive 20,000 miles a year. And in a Mustang it ruins the fun if you are in a car that much.
I like chargers, but they aren't really the sort of car I am looking for. Plus i don't want a V8. I want something quiet, cozy and AWD.
I'm actually looking at Infiniti G35x's.

but these do get 30mpg without any probs,but my wife and mom keep there foot outta the floor too.
He then shows his records and they say thats good.My dad keeps up very well with all maintance on his cars..maybe that has some to do with it.Now the one I bought my wife last month has been taking very good care of,it has every oil change reciept for it,on time since its first change and looks like all reciepts for any other work done.Cant complain it was only 6k paid cash with low milage,about 50k on the clock.