I just finished researching and buying a new tub, and I was willing to pay a premium for a high-quality larger-size tub to hold my family of 5. Based on my research:
- I'd add Sundance to the list, based on the mechanical and design similarities with Jacuzzi (same company, manufacturing, often similar components).
- This is very subjective, but during my own experience, I disqualified Marquis from the running fairly early on. YMMV.
I had a bunch of dealers in my area (Silicon Valley / SF Bay Area), and I looked at the Jacuzzi 400 series, the Sundance 880 series, the Hotspring Highlife models, and the D1 Bay collection.