This is my experience only. I have always like Catz fog lights, and I have a Catz MSX set on my wifes 95 Coupe since 1997 with no problems at all. The built quality is very good and sturdy in an all metal casing, and the switch is a very good rocker switch. I bought a set of PIAA 1100X foglights in Summer of 2000, and when I got it, the foglight felt more plasticky (if that is a word) the mounting base plate is made of hard plastic instead of metal like the Catz, the foglight switch is a cheap push button type switch that feels cheap IMHO, and to the wose part is 1 side had already burnt out on me. Now they are good foglights, but I don't recall anyone having any burning out problems with their Catz lights before, and I heard of a few PIAA lights buring out every once in a while. Now it could have just been my set, but the relay that came with the PIAA was crappy as well IMHO. I still would only choose Catz or PIAA though, but I feel Catz is a better quality light. If catz had a foglight you liked, then I would get it. If not, then I would still recomend the PIAA.