I voted for the Angel /50s, but only because I havent run the 55s-yet. I have run the old Stradas, wore em out, tried the PR2s (50s) based on forum recomendation, didnt hate em like the stones, but not near as confidence inspiring as the Stadas, the Angels have performed the best for me and all of my riding styles, commute, mountain twisties, track time, range time, and 2 up. I hear we have a dry rain here in WA State, so I guess my not wet riding doesnt count

But, I will say they really work good on the moist stuff.