Very interested in your headlight change. My wife has a 2015 MKC Reserve and she has trouble seeing at night to begin with. The MKC lights perform pretty poorly as far as I'm concerned. My 2011 Tahoe with Sylvania Silver Star Ultras perform much better. Did you use the OSRAM XENARC Night Breaker Laser? If so, how much brighter are they and how has the vision improved over the stock bulbs?