If you buy M3 you'll get a version of M2 that allows you to use teh M3 face morphs, so you're almost get both figures in one package. That was you'd be able to make clothes for both M2 and M3. Personally I only use M3 but that's because I the first male figure I bought was M3 - so far the only clothes I've bought are for M3. Hope this helps a little.