If you can get CRT I'd go with that. If you can't, SBP is a nice option. Why? Well.....................
I used to think SBP was the better breakfast. The first time we went there (when it first opened and was uncrowded) we had a great experience. The princesses spent a lot of time with our kids (as there was hardly anyone else in the place) and the atmosphere was neat. The food is not all that good, but I didn't expect it to be. It was nicer than CRT because CRT always felt more rushed.
Well, on our last trip we did both SBP and CRT again. SBP is now a very popular meal, and is just as crowded and rushed, actually maybe more rushed, than CRT. We enjoyed our CRT breakfast much more this time around, and the food is much better. That doesn't say much about the SBP food as I have always said the CRT food is not that good.
Yes, I am being critical here. Don't think we didn't enjoy them both, as we will probably do both again on our next trip. But if I had to choose, those are my thoughts. You really can't go wrong with either as they are both fun breakfasts that your girls will really enjoy.