The new GT500 is probably the best bang for the buck. Interior is not that bad and actually came a long way.
The seats are not as plush as an M3, and the doors and dash leave a bit to be desired. But the big fat steering wheel covered in suede and the shift knob is solid feeling leaving the car to feel very euro at times.
I think the 2015 redesign will offer more luxury to command a following in europe.
2013 GT500 + 2006 E90