The question I'd ask myself is are there any features of 4 you really need right now? If not use 3, as it is more production ready. Using 4 right now you are po

The question I'd ask myself is are there any features of 4 you really need right now? If not use 3, as it is more production ready. Using 4 right now you are potentially walking into a minefield. You might make it through ok but you might not.