I have stayed at both the All Star Resorts and at the CR - SOG rooms. There are pros and cons to both.
The rooms in the Garden Wing at the CR are no better or bigger than the rooms at the AS. The walk to the bus stop and at the monorail at the CR is about the same distance. As a matter of fact, we ended up walking to the Magic Kingdom more times than back to the monorail because the distance was about the same. Our room at the AS was actually cleaner and better kept than the one at the CR.
The condition of the room we were in did not make me feel like I was at a deluxe resort at the CR and I would never have paid full-price for it. The $100 at disney prices was not a bad deal though. I was quite disappointed with the "deal" SOG made for these rooms.
However, the CR itself is great in that you have a wonderful shopping area, the monorail access, and the proximity to Magic Kingdom which is great to take a mid-day break. You also have easy access to some great eating places and a great character meal at Chef Mickey's. My daughter also liked the pool slide (but there are more pools at the AS resorts.)
I enjoyed my stay at the CR-SOG because of the resort not because of the room we were in. Would I do it again? Yes, but only if I was in the Tower in a refurbished room for a slightly higher price.
What it comes down to is if you see yourself spending a lot of time at Magic Kingdom, then the convenience of CR is worth the extra money. Plus, your Ds would probably love watching the monorail. Best of luck with your decision and have a great time.