I have PIAA on my windshield and KC on the grill. The PIAA are SO much better. I can't remember if I have the 510 or 520. Whatever is 3.5 or 4" In diameter I have. They are just phenomenal. Don't get me wrong, I like my KC's and actually use them a bit more but something about the PIAA seems sturdier. KC does have a really nice warranty tho. That's why I have them mounted lower. Any rocks break them or something else breaks them I can get them fixed for free
"You didn't buy it to look at it!"
2000 TJ Solar yellow, 3.73, 178k, limited slip D44
2012 GMC sierra crew cab--Daily Driver
2008 jk X 6spd Red Rock---Sold and missed