We have also been to both and think they are both excellent.
Bluezoo dining room pretty "formal" (still resort casual but it's a fairly expensive, full dining experience). Food was great each time, service excellent. We have also eaten on the Cafe side (nearer the bar, as you come in) which is slightly less formal, and good for a cocktail and apps -- really neat food preparations/creations.
Kimonos is a solid sushi bar, more casual than Bluezoo. If you enjoy Japanese/sushi, you will likely love this place. After 9:30ish, loud and crazy with the kareoke, but fun (if you like that). Before then, starting at 5:30, calm, pleasant sushi bar, with great food and great service. (not really kid oriented) This is our favorite WDW dining experience (but we're also huge sushi fans).
The menus on swandolphin.com are fairly up-to-date.