I shopped the area pretty extensively last winter. A lot of options including the Hot Springs/Tiger River, Sundance, Jacuzzi and Bullfrog in the I-85 corrider. Sundance spas are nice but they seem to be a little higher in cost and they appear to be sold through the Georgia Backyard stores which I found to be one of the least appealing in terms of dealership. And of course there is the good old Rec Warehouse which has Caldera and Leisure Bay and a rather brutal rep for after sales service. I didn't but there so I don't know first hand but then again the reputation was one of the reasons I didn't buy there.
No Marquis dealer near that part of town and I would like to have at least wet tested them. But the drive was too far to the nearest dealer. Also D1 was in Marietta which is a pain to get to from the Norcross area so didn't check them out either.
I ended up with a Reflections spa which is a made by the same company as Vita. I like it and have been happy with the dealer so far. Reflections is kind of like Tiger River is to Hot Springs I suppose. Vita is a brand that doesn't get talked about that much here.
Vita has more fancy options while Reflections is a bit more basic although you can get pretty much any option if you go with the top line in the series (Reflections has three levels of models and the top level has lots of options). I liked both the Vita and Reflections spas. Bullfrog was probably my second choice, but a distant second. I liked Sundance but felt the additional cost wasn't worth it for me and of course didn't get a warm fuzzy from the dealership. I liked the Hot Spring dealer but neither my girlfriend nor I cared much for the spas. Just weren't our particular cup of tea.
If you are interested in the Vita dealer PM me and I will be happy to discuss more. I don't work in the spa industry, I am just a customer for what that is worth.