On my second set of Roadsmart 3's, if you're lucky they'll have rebates. Many are using them on FJR's, more neutral handling than PR4's, mileage is very similar. Sidewalls a little stiffer than PR4, not quite as stiff as Bridgestones. I have run several PR4 rears, very good to me. Some have run the Road5's, a bit softer compound so don't last as long. On the ST, keep your pressures up to 42 psi.