Yo Dave, very similar. I would say the Studios (V4 and V5)were a tad cleaner on the highs and the M80s seemed to go a little deeper, though differences were very minor. They sounded very similar overall to me, both were very detailed, similar imaging and soundstage but at unsimilar prices.(not A/B tested)

Keep in mind: I am also comparing M80s in my very UNperfect room vs the Paradigms in a properly setup and treated sound room at an audio store. The Digms were run through a Denon 2805(?) vs my newer version 2809, so the receivers were virtually the same.

Half of communication is listening. You can't listen with your mouth.