Re: new vase
All depends on the overall shape of your stem. My 2 enamled Syrians are tear-drop shaped (2 sections) and remarkably I love the boheiman shaped bases myself (h-s boheimans). They don't distract from the stem shape, heavy and very stable. But, I'm also getting one of the Hookah-Hookah bases for the green one... (MED Pooka-dot in green).
But the others are right, tear drop vases are very nice. It all depends on your taste in shapes.