Which is a better tire?
 

So I'm putting some used tires on the OEM 18s I picked up b/c I'm selling the car. I found these tires on CL at a local shop so I'm going to go down and have them mounted. Just wondering which is a better tire?

245/45ZR/18 CONTINENTAL SPORT 3 65% NEW 2 FOR $80.00

245/45/18 BRIDGESTONE POTENZA RE050 65% NEW 2 FOR $80.00

The potenzas come on the OEM 19s don't they? I don't know much about tires.. Anyways thanks!