I was really just responding to the post in general about going through more rear tires.
For the front on my Roadster I've tried just about everything, but keep coming back to the Dunlop American Elite Front Motorcycle Tire 140/75R-17 (67V). Not a 150, but if you're just trying to get away from the Avon that would, in my opinion, be a good choice. I'm not a fan of Avons- they tend to wear unevenly and cup.