My favourite ice flavours are cookies-n-cream and vanilla chip. I enjoy both of those in a Misto with vanilla custard, and I also enjoy vanilla ice and vanilla custard in a Misto.
My dad's favourite flavours are mango, cookies-n-cream, berry banana, lemon, green apple, island fusion, and banana. My mom's favourite flavours are blueberry, raspberry, banana, pina colada, coconut cream, and island fusion.
This is my favourite Blendini mix: vanilla custard, cookies-n-cream ice, and Oreo pieces. It's also pretty good with vanilla chip ice.
I used to work at Rita's! Here are some tidbits that may be interesting for you folks. Island Fusion is a mix of coconut, passionfruit, and mango flavours. Vanilla, cookies-n-cream, and vanilla chip are all different recipies, not just the same base vanilla flavour with Oreos or chocolate chips mixed in. There are only four sugar-free flavours: cherry, tangerine, root beer, and pink lemonade. This year's new flavours are birthday cake, sweet tea, Georgia peach, and keylime. Flavours are sometimes discontinued (lime and bubblegum). Any other questions, feel free to ask, and I'll do my best to answer.