I ended up ordering from Amazon. I never considered a warranty with our recently deceased 15 year old Dolphin. But these days it seems cleaners don't last that long. I contacted Matronics about local service and the closest one I found wasn't close at all. So I ended up ordering a Polaris from Amazon. We have local service a couple miles away that will service Amazon bought Polaris cleaners, and the credit card I used adds an additional 2 years extended warranty. When we bought a pump from a pool store on Ebay, we had a credit card that had a 1 year extended warranty and we got reimbursed for the pump, so you might want to check out any CC's you have to see if they offer any kind of extended warranty.It looks to me like the Dolphin Proteus DX4 is the same machine as the S200. I can get the DX4 on Amazon for about $50 less than I can purchase the S200 from a local authorized Dolphin Dealer. What I like about buying from Amazon is that you can purchase a 3 year extended warranty for $77, so.... for about $30 more than the price I would pay buying from a local dealer, I can get a 5 year warranty instead of the 2 year warranty. Not sure that I can get an extended warranty anywhere other than buying on Amazon. Any thoughts about the DX4, buying through Amazon, and getting the extended warranty vs using a local Dealer? I know I can probably get the cleaner for less at Marina Pools and Spas, but I'm not crazy about having to ship the cleaner to Marina for repairs if something breaks down.