I've got a set of Dunlop Roadsmarts that I put on the my '04 ST4S just before a recent 3500 mile trip. They worked really well in the mountain passes (dry). I rode through a fair amount of rain, too, but since I was being a bit cautious, I don't know how they would work if you were aggressive in those conditions. No problems or greasy feeling, though. They also still have plenty of tread.
I've got Conti' Road Attacks on the Monster, but haven't had a chance to ride them in the wet. They are great road (not road race) tires in the dry. It's a bit hard to compare the two directly, since, even though the bikes have identical frames and front suspension, the ST is about 80 lbs heavier than the Monster (and has the tunable Ohlins in the back) and the riding position is somewhat different.
One thing a bit down on the Dunlops is that they required somewhat more balance weight than the Pirellis that come off.