I came in here happy to see a store similar to ones I've seen in NYC and elsewhere. The staff there is very friendly, most likely owners, and they want you to feel comfortable tasting as much as you'd like. They even offer to help with good pairings already pre-determined.
Of course I had to taste everything since we were getting a gift basket for my brother-in-law. My favorite was actually the traditional aged balsamic. I guess I'm old school like that.
I'd give it 5 stars if they allow you to come back and refill a previously purchased bottle for a slight discount, which I've seen in similar places. That would be return customers galore!
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Update: So I got a response from the Store Manager, and she mentioned, "you CAN bring back your bottle for a discount on a refill! I'm sorry that you didn't know that. :( We suggest you toss the cork and run the bottle through the dishwasher, then we will refill it for $1 off the original price. It can be refilled with whatever you'd like! We will give you a new cork and re-seal the bottle."
Great! 5 stars it is.