Ive put 75,000 miles on my '12 MTS in 5 years and have run every S/T tire on the market. Before opining/commenting on these tires, I have to define how I ride. FWIW....I run 2:05's at Thunder Hill on my 600 track bike (running Q3's), if that means anything to you guys.
TF30R: most grip of ANY S/T I've run. The rear has a different profile, from any other tire I've run, which makes the bike 'feel' different on the rear. Run in 'sport' mode (rode hard!) they lasted 3850 miles.
Angels: real close to the TF30's for grip and feel great. Ridden 'hard' they lasted 3900 miles.
Road Smart II: great overall tire. I ran a Q3 frt/RSII rear several times...a great combo. Sets lasted between 4100-4600 miles, depending....
Roadtec 8: very similiar to the Angels in grip & feel.
Road Smart III: great grip (close to the Angels) + they lasted 4700 miles. Possibility the best S/T tire I've used on the grip vs longevity.
PR3/PR4: I like the 3's better then the 4's. If longevity is important, get the 4's. Not crazy about the frt because it wanders slightly on grooved pavement.
My favorite would be between the Angels and new RSIII's.
With all this said.....I was talking to a Dunlop tire guy, at MGP several years ago, and mentioned I was running a Q3 frt/RSII rear and he asked why. I told him I loved the way the Q3 felt under braking. He said, 'OK, I'll buy that. If you said grip I'd say this: if ur running out of grip with the RSII on the street, ud better rethink ur speed'.