I have a Solana TX with the 30 amp service wired to it. It is on it's 5th year of service with the following service done: 3rd year replaced footwell rotary jet, cost-$20.00, owner performed; 5th year cracked air jet control valve, cost-not in yet, done by dealer service; leak in line to Moto-Massage Unit, cost-not in yet, done by dealer service.
Overall, I am extremely happy with the tub. It only uses about 130 gallons of water, and very few chemicals. I am in Maine so only run it between April and October. It is on a wooden deck, specifically reinforced under the tub area to carry the weight. And lastly it is in an area only 8' by 8', (three sides) and has plenty of room around it to slide off the cover, and perform routine cleaning and service.