i agree w/ what wes and willie said. one thing that as a lessee you may want to consider if you're intent on minimizing your maintenance costs would be to lease a car with the all season tires. as an option they add around $185 extra to MSRP, but if you drive at all conservatively they have a good shot at lasting your entire lease. they will also give you some drivability in snow or ice. on the other hand, the PS2s will very likely need to be replaced by the time you hit 39K (typical mileage of many crossfire leases). even if you replace them with a cheaper tire, you'll still be looking at close to $1K out of your pocket that the next owner of the car will get to enjoy. so with any luck, you'll pay $0 for tires with the all seasons. also, ironically, it's cheaper to replace one of the all season tires in the event of a road hazard than it would be to replace a PS2.
on the other hand if you don't want to sacrifice the least bit of dry and wet pavement handling, don't need to drive on snow or ice, and don't mind spending for replacement tires, you will be thrilled with the PS2s. i bought my Crossfire with the PS2s, but that was mostly because the dealer with lowest price i could find only had those tires. otherwise, given a choice, i'm not sure which i would have picked.