i have the st60 v.2 and st40 v.3. the treble on the v.3 speakers is brighter sounding to me but may also be clearer. i liked the way the v.2 sounds better for music and i like the way the v.3 sounds better for dialog (movies and tv). i would have bought the v.2s as my second set of speakers as well, but the front porting on the v.3s made for a better choice since I needed to place the speakers near a wall. i think that you will be very happy with either versions (btw, i have never heard the 60 v.3s, only the 40 v.3s)
