We are going to 3 plays while in the city and would like suggestions about moderately priced food, lunch and evening. Have eaten at Joe Allen...still good?

46th St between 8th and 9th Ave where Joe Allen is located is called Restaurant Row, many choices available in that block. B. Smith offers very good updated soul food. Look at 9th Avenue in the 40s for a number of good ethnic restaurants.
Others nearby include West Bank Café, Marseille, Room Service, Molyvos.
Stay away from the Times Square chain restaurants.

Agree with Molyvos near Carnegie Hall, good Greek food, roast chicken, baked lamb shank, grilled fish, all well done.

We ate at Don Antonio at 50th & 8th, a branch of a Naples restaurant serving nicely blistered thin crust pizza, light on the sauce and cheese. Open late so perhaps better for an after show meal, since no reservations taken.

Earlier this month, we had good meals at Pongsri Thai, Afghan Kebab House, Totto Ramen, and Kashkaval.

Here's a link to an excellent food blog with the section on Hell's Kitchen, the area just west of Times Square.
http://eatingwithziggy.com/category/.../midtown-west/

My favorite is the West Bank Cafe