You won't need an upgrade on this one. Only thing I can find wrong is a 1/2" annealing line on the inner skirt base, a pinhead size flake on the outer base and some wear on the outer base. Has a couple minor fire bricks and many little bubbles throughout. I'm asking $300.00 shipped based on scarcity and color as well. It's all blue. You won't be disappointed. 1st email as usual and more photo's available if needed. Thanks for looking.