Your best bet is to do some digging, maybe over a 50 mile radius, and figure out what brands are available in that radius. Then research those brands here with the Search function to quickly get a feel for which are the more respected brands. From there, figure out your price point, and then start scheduling wet-tests from that short list.
I quickly learned after wet-testing that what was jumping out at me ON PAPER, evaporated during a wet-test, either because some types had us floating out of our seats more than others, or because some turned out to be much for effective than others (all the brands we tested were highly-regarded, so as you can surmise, your mileage may vary after you've been in one).
Bottom-line, regardless of the "best hot tubs out there," you want to find the best brands near you, and then wet-test them. Even if you're sold on Arctic, it's nice to have a basis of comparison.