I was in the same boat...long time user of the PR2 and was a big fan other than the difficulty in mounting them on some rims. I've seen some of the issues with the new pr3 first hand (my gf rides them) and have to say they certainly don't seem as durable as the PR2 with regards to cuts. So this season i'm riding the Rubino Pros primarily as a training tire (for reference will race on Vittoria tubulars or veloflex clinchers).

My initial impressions of the Rubinos is good. They ride nice, but not as nice as the PR2, but that's likely due primarily to the difference in size (the 23 PR2 is huge in comparison), but don't seem to have the low rolling resistance of the PR2 (my impression anyway). So far they wear well, probably have 1500 miles on them with very little evidence of squaring off and seem to be holding up to cuts, especially given the nasty spring roads in central ny. As far as the wet weather grip, I was initially a little put off on the bad reviews. Recently came back from a week of training on the Rubinos in Asheville, NC with a couple noteworthy descents in pouring rain (rt 151 for example) and felt pretty comfortable pushing the tires pretty hard with no more slipping than you would expect in those conditions. Keep in mind when it's wet you MUST run lower pressure if you want the most grip...

But a previous poster is correct...the Rubino and PR2 are not designed with the same use in mind. That being said IMHO they are an excellent training tire.

hope this helps,
wayne