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save yourself some money and look at the Hot Spot Rhythm made by Hot Springs, cheaper 7' x 7' with better insulation than both mentioned
I actually enjoy having a 2 speed pump...My wife and I can sit in the tub and have one of the two pumps on low only and have a gentle amount of water movement and also run our water feature for a nice relaxing soak and actually talk and catch up due to our overlapping work schedules. When a pump/pumps on high the db level gets to be a bit to talk over.