You will get lots of different opinions on this - usually (but not always) people say they are happy with their choice.
Comments on what I have had:
- Falken 452 (on a VY SV8). Very good.
- Nexen N3000 (cheap and on car when I bought it). Not bad but when being replaced the inner walls were separating in large bubbles. Could be because I drive on some dirt/rock roads about once per month - but still not happy.
- Just bought 2nd set of Pirelli PZero Nero. Great value. Excellent grip and quiet, but wear a bit faster. Probably similar wear rate to Potenzas.
Also not that the in the Motor mag tyre test this year the Pirelli PZero (not the Nero) came out on top. But note that they are dearer than my PZero Nero's.