I just took delivery today of Polar Spa.
We didn't start with a new spa though. Too many people I know have gotten them, and then hated the upkeep and rarely used them, so we had originally watched Bargain Finder and got a decent sized 5 year old tub for about 3000. We used Beach Comber's 'CareFree' system in it (which didn't bother my skin at all), and found we loved it. When it sprung a leak we couldn't fix at around 8 or 9 yrs old, we replaced it with another BeachComber. We were very pleased with their product.
We've been without a hot tub since our move though, and when we went to the BeachComber dealer here to buy a new one, apparently we didn't look rich enough to be bothered speaking to. So, customer loyalty went out the window, and research began. We narrowed our purchase down to two companies here, based on price and construction (good insulation is key living in Canada). Polar Spas ended up coming out on top, with a well insulated tub, sleek design, good price, and lots of 'add ons' that the company gave us. It's also (supposedly) a little to no chemical hot tub, having an ozone generator to keep the water clean, rather then relying on chemicals. Other companies had ozone assistance, but none that eliminated the need for daily chemical. With this company, the only time you need chemical is if and when you have extra people in for extended periods of time (supposedly).
We're essentially the family guinea pigs for this particular company. If they're all they're cracked up to be, then my folks will be picking one up too.
Oh, and the company has an energy guarantee.... if you feel your power bill has jumped too much after getting the tub, they'll send someone in to put a meter on the line to see if there's a problem with the tub, if it's using too much energy.