I went from a 2006 Mustang GT to a 2012 WRX, and thus far I couldn't be happier with the change. My main complaint about the Mustang was how it beat the hell out of me, and now that I am getting older, the novelty of being semi-quick in a straight line while my back takes a beating was getting old.
I like the WRX because I can see out of it whereas the Mustang was blind spot hell. My wife likes the ride of it compared to both my former Mustang and even likes it better than her 2011 Genesis Coupe 3.8 GT. I purchased it because I always wanted one of the AWD Subarus, and the timing was just right. I also never thought I would see the day where I would find a car that balances out being practical with useful space while being fun to drive.