Welcome to our forum.
One thing that I have a slight dislike for in my tub is the neck collar seat - I dry tested it, didn't wet test, and it fits differently wet. I can't get a back and neck message at the same time - I need to sit forward and lean back to get a neck message. It's not awfully bad but something i didn't think of or noticed at the time.Remember the spa is going to be your spa and only YOU can determine which is correct for you.Good luck!
what's your view of full foam versus the other type of insulation some spas have water fall handles,volcanic jets, neck jets, chrome jets, 1 motor versus 2 & 3 motors