Alright, I'm sharing with you one of favorite finds.... Kazusa on 2nd Ave btw 72-73rd Sts.
Amazing udon, unagi, delicious rolls, very fresh, generously sliced sashimi, and great lunch deals; clean, inviting decor; fast, exceedingly polite service; and terrific value anytime of day. And they deliver!
Been there 3 or so years -- I've been going 1-2x/wk for a couple months, and it's never busy, so thought I'd help them out -- and you! Enjoy!