On a hot summers day I enjoy an iced coffee, and Starbucks usually makes a good Frappuccino, but the last one I had was all ice, and not crushed but large cubes. The liquid disappeared in a couple of slurps. Not good. Tim Horton's seems to make a better version where the ice is ground up, the Iced Capp. Who else makes a good iced coffee?
In terms of iced coffee, iced americano or an iced mocha, Habit and 2% Jazz both are very good.
I've never ordered a frappuccino, so if that's what you're after, I can't help ya!