I have used RE001 and Dunlop SP 3000 .. If im not wrong the Dunlops are silica based.Between the 2 tires i loved the Dunlops.Great grip regardless of weather. My most recent set were RE001 and now i have RE-01R which were put on 2 weeks ago. IMO the best size is 205/50/16 .The only negative i found with RE001 was the replacement cost. I personally keep away from Falkens , Silverstones , Yellow Seas , Nankang and other entry level tyres. Khumo , Hankook ,Michelin , Dunlop , Bridgestone and Goodyear i would recommend.(there are other good brands that i may have missed)