Bridgestone S20s (12R) were pretty good - nothing bad to say about them at all.
Conti Sport Attack (BMW R1200S) - didn't care for them too much, pretty grippy though. I think they didn't like to lean as easy.
Michelin PP 2CT (12R) - Love!
Bridgestone BT-016 (12R) - Nothing bad, but I'd get the s20s over these.
I should mention I don't ride in the rain and generally don't push my tires to the limit. The BT-016s were on my 12R from the PO and do have some flattening of the tread due to too much upright riding.
I think Michelin PR3s or PR4 will be my next tire. - more mileage, most of the grip of the PP series.
Well I've ran pirelli diablo's which were very sticky but only got around 3k miles I road in dry weather and flooding rain never had a problem. I've ran pirelli diablo's c3's super super sticky but only got about 1k miles out of them only dry weather. And now I'm running Michelin pilot power 3's they are just as sticky as the diablo's and have ridden in wet and dry weather, but haven't seen the milage yet! All of these tires were on my xb12r and have been pushed very hard.