You made a good decision. In another thread I stated that I feel the 500 EFI Ranger mid-size is the best deal in that UV out there. I have a Gator now (825I) which I really like, but I am looking for a small UV to replace my dad's 825 which I will likely sell. He is older and has mild dementia and the 825 is simply too much for him right now to operate. There is no question the Polaris 500 is the better machine between it and the 550 Gator. The Gator has a lawn mower engine (literally) and has 16 HP. It has a pull choke (a no go for me). The Ranger, for similar money, is about the same size, has fuel injection and 32 HP with a speed key to use for my dad. Having owned an 800 EPS Ranger full size, I can say my experience is the additional power of the 800 is nice, but not really perceptible until top end, where very few of us spend much time. The single cylinder engine in the 500 is bulletproof, very common and extremely reliable. You will be happy with your purchase and I suspect no one commented about the 550 because they are not really a valid comparison for the machine you purchased. Picture when you get it for us?
John M