If I was buying any beats, and I wouldn't because, well, they suck, it would be the higher end pro's. Then again, that would spend splurging even more money on a product that may look nice, but has terrible build quality and subpar audio performance.
You would be much better advised going with a nice pair of Sennheiser, Audio Technica or even a nice set of IEMs. Ultimate Ears had a great deal on the Triple.Fi 10 on Amazon a while ago - it may still be running.
The pros don't have horrible build quality. Full aluminum construction. You joking?
Anyway OP, if you like a lot of bass, get the Studios. Not even the ultrasone pro 900s match the studios when it comes to bass quantity. The studios have terrible build quality, however.