RE: Whats bigger than the E-Flight 450 besides the 480?
The E-flite 480 is 87g so it is only a little larger than the typical 3530 motors. There are plenty of those to choose from, but if you really must have a 12x6 you are going to need a low Kv 3536 or bigger. Even low Kv 3530 motors can't cope with a 12x6 on 3s. You must be running your 450 and 12x6 on 2s.... surely!
2208 and 2212 are stator dimensions... other makers (using, for example, 3530) have a convention referring to external dimensions.