I guess I'm a glass half empty, poh-tay-toh po-tah-toh guy on this. Extend the life of 5 or pay the price of 4 probably comes out in the wash.
<pic thread> My gone but not forgotten 100 in the driveway.
Also, I bought this thing a couple years ago. Plug and play. It's paid for itself a half dozen times already. There's about a gazillion of them out there.