My focus is the Pennsylvania Railroad. I look for scale models of real PRR prototypes - not just paint schemes. Brand does not matter much to me. the only time I consider it is when I have been burned by a product from one brand, I tend shy away from that brand. I have Sunset, Lionel, MTH, USH, MG, Gem, Williams, Weaver, NJCB, The Carworks and Quality Craft and Ambroid kits I have built.