in order of preference on the zed, running stock oem 18's my tyre preference would run something like this
1. MPS2's
2. RE050A's
3. Vredestein Ultrac Sessantas
4. Falken 452's
5. uniroyal rainsport 2's
6. toyo T1r's
7. nankangs (only if you want to die)
lots of other tyres i'd consider but these partcular ones are the most commonly mentioned
pirelli pzeros are good as are goodyear eagle f1 assymetrics, continental sport contacts 2, 3 and 5's
to be honest as long as you don't buy cheap ass crap tyres from korea you cant go to far wrong.