We purchased ours late last year and it has only been in operation for about 3 and a half months - the dealer Premium Wholesale: Home & Leisure - is the most useless company I have ever had to deal with. They called the day before delivery to inform us that we would need to provide 2-3 guys to assist with the delivery - not a big deal had they informed us of that when we bought or even a week or two before delivery - but a days notice was unacceptable. Luckily I had an employee and a neighbour available on short notice.
Then came the initial scare within days of filling it that there was a leak - first the email me a "how-to fix it yourself" which had me remove all the side panels and tighten all the unions. Then after asking for a tech to come out ASAP and no response I included Master Spas (email@example.com) in the dialog. They were fairly prompt to get back to me and said they were in touch with the dealer and someone was coming out. After another couple weeks I was finally able to get someone out to deliver the cover lifter and inspect a possible leak after about a month of nagging - luckily there was no leak.
Now our diverters have seized and we have a LED shining the wrong colour, so again after over a month I am still waiting to have the tech out as they are "waiting on parts". We love the tub but the dealer and service absolutely sucks despite what we were told at the show about them having 2 stores and tech always in the area.
My concern is what happens if something major happens like a leak or pump in the winter - I can't wait a month for them to get it fixed.
I recommend buy local and forget the name Master Spas, Twilight or Premium Wholesale.