The one I have has a flat bottom, which I really like b/c I can put it down.
This beauty arrived Monday and I was surprised--pleasantly--at its size: it's big. It's basically the same size as my favorite, the long departed GBD Calabash. Side by the side, the two shapes are also very similar which gives me a replacement for the GBD.
JM had a Jumbo Egg for sale recently. That must have been huge.