As an avid Angel GT user, I just went through a set of Roadsmart 3s. I think you will like them. They held their shape the entire life of the tire and stuck just as good as an Angel GT. It was a more aggressive tip in compared to a T30. At 5k miles, the Roadsmart wasn't quite to the wear bars. I had to switch them cause I didn't want to run out of tread on my trip. I bet I could get more than 6k out of a set.
For Mileage reference
PR4GT (I've ran 1 Set. Fall Gap Trip) Front: 4000 Rear: 7400
T30 EVO GT (On my 2nd Set. WV Trip, New England Trip) Front: 3500 Rear: 3500
Angel GT (Ran 6 or 7 sets on my BMW and FJR) Front:4500 Rear: 4000
RoadSmart 3s (One Set, Ozark Trip)Front: 5000 Rear: 5000
Of course there will always be too many variables. (Road type, Road Temp, Tire Pressure. Bike, Riding Aggressiveness, Riding Style, Bike Load, Suspension Setup, Heat Cycle Count.) The variables are just way too vast to really compare apples to apples.