452s do not have good grip, they have average grip at best. Feel is also limited due to the sloppy sidewalls. They are the budget tyre for the Zed, and a good choice only if you cannot afford a performance tyre.
Vredesteins have better grip, but where they excel is feel and this makes pushing on a pleasure. I love these on a Zed, especially in the winter.
PS2s have incredible grip and feel but are being phased out in place of the Pilot Super Sport. These are longer lasting than the PS2 and have better wet AND dry grip, so in short if you were considering the PS2s then the PSS really should be the only ones you should go for. Utterly, utterly wonderful tyres.
RE050As are also pretty good (better grip than the VUS but not as good as the Michelin) but considering how close they are to the PSS in cost, I'd spend the little bit extra and get the Michelins.