Eug: Good tyres are expensive... IMO you are better off sticking with the well known brands like Michelin, Bridgestone, Goodyear, Falken, Yokahama, Dunlop, etc if you are after a great performance tyre...
Thats not to say there is anything wrong with Sava, Federal, Nankang, Woosung, etc... They are just nowhere near as good as the ones above...
I'm leaning towards good fronts and shit rears lately... *looks at sig*