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It's a significant investment and it will take up a lot of space. You want to ensure you will like it. WET TEST!! Make a weekend road trip out of it if necessary. It's worth it especially with your respective heights.
As I work at the Aspen Spas factory here in St. Louis, MO, of course I am going to champion the Quattro ES. I like the ergonomics of the "no-float" lounger and the ES version of it has (2) dual-speed motors, (2) 70GPM volcano jets for the feet, and a full 5 year warranty parts and labor. The full ABS pan base is a nice feature, and the phone app, touch screen controls, and 3-zone in.mix lighting are neat if you like that stuff (but really not required). If you don't want as many jets or motors, there are single pump options of 10 amps and 30 jets or 8 amps and 24 jets, fyi.But all that aside - I actually own a Quattro ES so I am not just a honk for it, I chose it personally as my spa. Of subject here but are you guys displaying in New orleans or Atlantic City trade shows this fall or winter? Love to see what you guys are all aboutHappy to answer any questions for you here, via direct message, or email (dan@aspenspas.com). BTW - Marquis is a great brand and I have personally sold them at previous jobs so you're in good hands with them. While I haven't dealt directly with Nordic Spas, I have a few dealers who speak highly of them. I'd trust your gut on the box stores, and the dealers with poor reputations also. Thanks for letting me chime in!