Mine is 32-bit so I don't have to worry about the 64-bit compatibilty problems. Are you saying that each comes with both 32 and 64-bit installations or you have to be careful which bit you buy? Would I be able to upgrade my full versions of Photoshop CS, Illustrator CS and InDesign CS to CS4 instead of getting the full Suite? Now If I can do that the upgrades of each might be better be a better price. Looks like more research is needed with price comparisons. What a pain!