I owned a tub for 4 and 1/2 years I tell you what I wish someone told me.
Pay $3000. at sams club or home depo they are just as good as the big names,and if they break in 5 years you can buy a new with money left over.
I spent $7600. for a Watkins Hotspot Lapalma
Its 4 and 1/2 years old now ,and I went though 4 two speed pumps and 2 pressure switches. After that poor 2 year warranty no one will answer the phone. The cost to replace a motor was $700. plus install.
So, I would skip Hot spot,aka hot springs, Watkins