We have been hot tub shopping for several months and remain confused. At this point I think we want closed cell, full foam insulation. We really only want one pump that we can put on a timer to heat the water during off-peak hours. I like the Marquis but find it too deep. We range in heights from 5'4" to 5'10". In our area we have Marquis, Hot Springs, Sundance, Dynasty, Dimension 1, Caldera. We'll use it mostly for recreation. I don't want a lounger. I do want a waterfall, lighting, cover lift, quality cover, ENERGY EFFICIENCY! Who can make a recommendation? I'd especially appreciate info on the Dynasty as I haven't been able to find out much about that one. Thanks!