Well, just my opinion but I can tell you what hasn't impressed me. I went to that had a juice bar whee you had to drip the juice, try it, and then when you wanted to try another you first had to blow out the old juice onto a napkin and then drip the new flavor..and the guy advised to do things like cinnamon last so it didn't totally alter the tasting device.
I tried it once and decided it was to messy to pick another juice.
I just want to go into a store, be given one of their little tester batteries, and use the little pre filled tanks. No dripping, blowing stuff out, redripping, wondering if I dripped not enough.
Others here may prefer the set up but to me as a noob, I like testing to be simple and not so messy.