I can't speak for the Beats Studio, but I have a pair of Beats Tours.
They are definitely a large step up from Skull Candys you were using before. The quality of the sound that comes out of the Beats Tours, though, could probably be had for less that how much the Tours cost.
The bass is great, so if you like bassy music, they'll be good you you. Also, the cable is ridiculously hard to tangle up; that flat cable tech really works well.
I hear the Studios are noise-canceling, so that might affect the quality of the sound somewhat. Probably too bad of a thing though.