I've recently put a set of Pirelli Angel ST's on my Triumph Sprint ST 1050.
I loved the tires...near Sport Tire grip levels. Front is still looking good at 11,000 kms (6875 miles), rear replaced at approx 9500 kms (just under 6000 miles).
Pretty average for a set of Sport Touring Tires for me. I've got as little as 6500 kms out of BT 20/21 and as long as 11,500 kms out of Mich Pilot Road.