Welcome to our forum.
For the most part, every major tub manufacturer has a niche that they advertise - that is Hot Springs niche. Take a look at the post that Steve started about the 2 things about the manufacture you represent.I bought an Artesian and it's circ pump will cycle 400 gallons of water approx 40 times a day and Beachcomber has a pump called a hush pump that filters even more. A lot of tubs don't have a circ pump at all.When it comes to clean water, I think it's safe to say that all the major manufacturers will provide you with clean water as long as you follow the correct guidelines - whatever that may be for the manufacturer. Pick a tub on what YOU like and don't sweat the things like filtration too much.Just my 2 cents!
Vinny is bang on! Welcome to marketing 101.
Most spas with more than one or two pumps have jet pumps that draw water from suctions in the bottom of the tub and pump the water directly back to the jets.
Most all tubs filter 100% of the water multiple times each day through the circulation/filtration pump. This is important.
I've had several different brands of hot tubs and have noticed that in my hot springs with 100% filtration I don't need clarifiers, I don't have scum lines, and there is almost no scrubbing or cleaning the shell when i drain and refill.
100% filtration probably isn't needed if the spas you sell don't have it
Although the Beachcomber in my showroom isn't used as often as most owners' tubs, I can say the exact same thing regarding clarifiers, scum lines, and general cleaning. It is a 400 gallon tub that uses a single 25 sq. foot filter.