Last May, we ate at CRT for breakfast & saw the following princesses: Aurora (Sleeping Beauty), Belle (in her blue & white dress), Cinderella, Snow White, & Wendy (from Peter Pan). The Fairy Godmother was in the lobby. Of course, this has changed now - Cinderella is in the lobby, and the other princesses circulate among the tables upstairs (breakfast & lunch).
We also ate PSB dinner at Akershus in Norway at EPCOT & saw the following princesses: Ariel, Aurora, Belle (in her blue & white dress), Cinderella, & Jasmine. However, I don't think Cinderella is normally at PSB - we were told she was "subbing" for Snow White. Don't plan on seeing Cinderella at PSB - if she's there, it's a pleasant surprise!
Regarding food, we enjoyed the breakfast food at CRT. It wasn't wonderful or anywhere near gourmet, but we realized we weren't paying for the food. (Well, to be perfectly honest,
I realized this more than DH - he was a little bummed out upon reflecting on the cost of the meal & the actual quality of the meal. And this was BEFORE it went to 2 TS credits!

I was just thrilled to be in the castle. After getting up early every morning exactly 90 days before I planned to eat there trying to get an ADR & finally getting one, I would have been happy w/ crackers & water...) But, I did really like the stuffed French toast & fresh fruit - yummy!
We, however, did not enjoy the food at PSB. I had the Pasta Akershus, and the pasta was sticky & the marinara sauce was dried out. DH had the poached cod, and he said it was only "okay". DD had a PB & J uncrustable, & DS had a hot dog. The desserts were the best part of this meal - really delicious. However, I think they've changed the menu since last May, and I realize we could have gotten the restaurant on a bad night. After reading PrincessAurora's review of dinner at Akershus, I'm willing to give it another try.
This year, we have ADR's for lunch at CRT & for breakfast at PSB.
If you are set on seeing Cinderella, again, I wouldn't plan PSB if I were you. She is not normally one of the princesses on rotation there. The only places you can count on seeing Cinderella are 1900 Park Fare (dinner) & CRT where she'll be in the lobby for pics (breakfast, lunch, & dinner). You probably have an equal shot of seeing Sleeping Beauty and Snow White at PSB & at CRT - it just depends on the day & the meal. Our favorite princess is probably Snow White, which is one reason we have ADR's at both PSB & CRT - to increase our chances of seeing her. Most of the time, Jasmine is only at PSB. I don't think I've read any reports of her being at CRT. If she was, she's not a "regular" there.
So, if I were you, knowing the princesses you really like (Cinderella, Sleeping Beauty, & Snow White), I'd probably schedule breakfast or lunch at CRT (& pay OPP - don't use TS credits for it) -
if you're only scheduling 1 princess meal. Cinderella is the only princess at 1900 Park Fare, so, if you really want to see some other princesses, I'd wouldn't schedule an ADR there. Many times, you can find Jasmine at Morocco in EPCOT or in Adventureland in MK.
If you were scheduling 2 princess meals, I'd recommend either (1) dinner at 1900 Park Fare (for Cinderella) & lunch or dinner at PSB (I think Jasmine shows up more for lunch & dinner at PSB than at breakfast) or (2) breakfast or lunch at CRT & lunch or dinner at PSB.
You have the most chances of seeing the most princesses by scheduling ADR's for both CRT & PSB. However, since CRT is 2 TS credits, dinner at 1900 Park Fare & breakfast/lunch/dinner at PSB might be the better option.
Whew! I can really ramble, can't I?

Have fun deciding!!