I had the Pirelli's on my FJR1300, apart from 3 punctures in 2 weeks (I was living in a new housing estate and I'm sure the builders were dropping screws all over the roads on purpose) I thought they were OK, I had 10,000 Km (6000 miles, so your maths is correct) when I traded up to the second Rocket III, and the new owner who "flipped" the FJR and bought an ancient Yamaha "Venture" (V4 tourer thing?) needed to put on a new rear to pass a roadworthy inspection. I pity the poor bugger who did the tyre changes, both tyres had a bottle of water based tyre sealant in them, in case I ran over any more screws.
I went for a ride with the FJR club (and saw 250 KPH/156 MPH) on it, chasing the prez on his shiny new ABS equipped 6 speed FJR, and almost ran up his arse at that speed when he saw a car coming towards us with a "Double Bubble" on the roof, which, thank the Great Pumpkin, was actually a "Country Fire Authority" car and not a cop car, or else I'd probably be typing this from a jail cell. That's the difference between ABS and non ABS, with ABS you pull up quicker, with no ABS you skid to a halt. What I noticed though, was quite a lot of the FJR guys who were on their second or third bike were all devotees to the Michelins, and didn't have much time for the Pirelli's.
Personally, I'd still try the Stinko's, at least if they are crap they didn't cost you big to find out.