Hey all, I just had my car in the shop for what I thought was broken motor mounts but turned out to be bad plug wires. I replaced the wires myself three years ago so I was a little surprised by that. He offered to get a set for me for about $150, but the Bosch's that I put in myself 3 years ago cost about $75 if I remember right. Is there that big of difference in quality? Anyone have experience with this?