Thanks for the info. I think for now I'm sticking with Dunlops. When I was ordering tires for my previous race, Pirelli/Metzeler tires were nowhere to be found (backorder), so I went with Dunlops. Slightly different set-up though -- 207GP 160 instead of 170 rear and a 208GP front. Worked awesome. Didn't have to change my set-up, front wore really well, turning in improved dramatically. Also, the guy at the shop who also races a F3 said he didn't like the way Pirellis slide. He said they pretty much let go, just like Michelins instead of a more gradual slide.