Ok, so I was coming home from the gym and I drove through some debris from a car accident that just happened...When I got home, I found a screw right in the tread of my tires!

The tires I have are stock now, but it was almost time to get new tires anyway...so I guess I could just buy a new set of decent tires, instead of wasting money on repairing it. Apparently the dunlop SP5000 is discontinued (?). I was looking at the Kumho Ecsta MX ($79 a piece) in size p205/50/R15. Anyone have any comments on these tires? How long do they last? How much grip do they have? Is it worth it?