I have not stayed at SOG, so I can't comment on it's atmosphere (although I hear it is nice, although not "Disney") but I can comment on the price.
Depending on your rank, SOG is $72.00- $ 104.00 for a standard room right now.
Since you are an annual passholder, you qualify for AP rates for rooms, if available for your time frame, which may be only $79.00/night + tax (for about $88/night total, I believe) for a moderate (depending on the season).
You may also be better off than SOG prices with a "Code" rate, also, if one is availiable during your travel time. The code rate may be as low as only $89.00/night + tax (for about $99/night total, I believe) for a moderate (depending on the season).
Also, if SOG does not have a room available when you want to stay, they can get you discounted rates at the Disney Resorts. When we went in Oct. 2003, the rate for our moderate (CBR) was $89.00/night + tax (which totaled about $99/night, I believe.)
So, SOG isn't always the best deal, and if you are traveling in a Peak or Regular season, you may have a hard time even getting a room there.
Good Luck,
Cathy