I've just bought the PowerBeats 2. I know a guy at work with the Soundpeats and after listening to them I really do not rate them at all.
I'm by no means an audiophile, but i found the Soundpeats are very tinny sounding and I don't rate them at all for music.
Day to day I have a set of Yamaha HPH-PRO 500's which are perfect in terms of bass, mids & treble balance. At least I think so. The beats are more bass orientated which is what I've always heard and why I went for the Yamaha's over the beats for my main headphones.
For running/gym the beats will be ideal. Good quality sound, fits very nice and look good.