I've tried avons, bt45's(Bridgestone) metzlers, Pirelli speed/sport demons, now I'm on the k70,s.
They've lasted around 8000km so far and still have life in them. Quite impressed. They've outlasted the other tyres and are considerably cheaper.
For grip and great feel, number 1 is the avons and bt45. Bt's were expensive though and had the least lifespan.next the k70's. Pretty good grip, good feel and the cheapest of all. Next the Pirelli. Lasted pretty well, not too grippy though, then the metzlers lasertec. Didn't like the lasertecs at all. My 2cents.