I've been partially loading my BBs with $200 MCGCs (from Staples/OfficeMax) for the past year or more. However, I haven't seen these particular cards in any of my local stores for at least a month. Which means I'll need to venture to another office supply store for VGCs to load in June. Which ones should I be purchasing? Is there some way to see what series you're buying before you open the package? Is there a particular package design I should be looking for or avoiding?