Re: Want another base
MYA themselves will have the biggest selection of vase (bases - i used them interchangbly), but they may cost the most. Just keep hitting the various stores - I got an Email from Social Smoke they are having some sales next month, so if you hunt around you may find some good deals.
Vase/base is up to you - my biggest worry with MYA jars... the recent mishaps of the glass thickness not being constant. Too many people are saying their new MYA jars are breaking easily. But if you go with an older style, you shouldn't have too much of an issue.
PS: are you looking for side in or screw-on vase/base?