I believe Colorado Ski and Golf has a store in Littlefun. BC Surf&Sport at Park Meadows is another good shop in that neck of the woods. There is a Christy Sport's and an REI in that area too. For Burton stuff, any one of those guys probably have some or all of what you are looking for. Not sure on the Flux stuff. Plenty of snow shops at each of the mountains too, though the Denver Metro stores tend to be better stocked. Not always true, but that is the trend.