We love SOG. The rooms are bigger and have an extra fold out couch.There's no tax on the rooms, food or things in the store. The buses aren't as crowded and you can always walk to the Poly for the monorail or to T&T. You do have to pay to park and you don't get free parking at the parks, so if you want to drive, expect to have to pay. The restaurants aren't great, but room service is cheaper than counter service in the parks.
There aren't a lot of special Disney touches like in the resorts, so if you are looking for that SOG might not be for you.