Yep, I've got a Kamado Joe Classic and will soon have a Kamado Joe Big Joe, so we are talking same sizes here. The Classic works great for grilling and a lot of smoking jobs, but there are a few cooks that the Big Joe will do so much easier and not cramming the meat in the cooker.
As usual, get the biggest cooker your budget allows. Many people wish they had got a bigger cooker, very few wish they had got a smaller cooker.
I couldnt agree more. I wish I had gotten the Big Joe instead of the Classic. There isnt such a thing as too big.