I went from years of Mustangs to my Fiesta ST. It's an absolute blast to drive. It gets fantastic gas mileage, it's 'different', well balanced and has just enough power to have fun, but not too much to get you in trouble. After driving friends' new 5.0 Mustangs, I'm not that excited about going back. They're plenty powerful, but lack the fun factor of my Fiesta.
I was pretty disappointed we don't get the updated Fiesta and Focus. Also, slapping ST on a bloated SUV like an Explorer was not what ST originally stood for. Kind of reminds me when Chevy used to put SS on everything in their lineup.