chams, silvers, PEWs and cham tans. It depends what looks the best the Tuesday before.
On reserving mice, if you want to breed for show, look in the NMC year book and the monthly NMC mags and find out who's winning with the varieties you want. Then call them, find out what shows they'll be at, and go from there. If you want to show don't buy from people that don't show or who have just started showing - you need the best mice you can get to start out with, and to get those you need to go to people that know what they're talking about.