i have some on my truck now they are BRIGHT. i bought the kit that comes with 4 of them for 100 bucks and some change, the kit came with all wires, hardware such as t taps, and the rocker switch. imo they are no different than kc lights all my friends think they are kc. the F-in bulbs are even inter-changeable two of my four have 130 watt kc bulbs in them. a+++ man. i dont know about the rust issue though because i have only had mine for like 10 months, no problems or no rust yet.