I agree with Copeman's views on the Winter Garden. It was the site of my first Broadway show, Mary Martin in PETER PAN back in 1954. Its width gives every seat good sightlines. The last time I was in the theatre was for the 1980 production of 42Nd STREET and the theatre had just been renovated and was in beautiful shape. The Winter Garden will always remain special to me. Other shows I saw there are WEST SIDE STORY(original production), THE UNSINKABLE MOLLY BROWN with Tammy Grimes, FUNNY GIRL with Barbra Streisand, and MAME when it starred Ann Miller(Jerry Herman wrote a special tap dance number for her).
I also love the Shubert, although the lighting bridge obscures some of the murals on the ceiling. I love the wooden beams on the underside of the mezzanine, visible from the orchestra level. I have seen countless shows there over the years.
The Mark Hellinger may be the most beautiful and also has great sight lines. Shows I saw there include the original production of MY FAIR LADY in 1956, FADE OUT, FADE IN with Carol Burnett, TIMBUKTU-- the re-make of KISMET, and SUGAR BABIES with Mickey Rooney and the fabulous Ann Miller.
I always make it my business to look around every theatre I am in to note the beautiful architecture including the murals and glittering chandeliers. Almost every theatre has a special look, with the exception of the Gershwin and the Marquis.
"Madam Rose...and her daughter...Gypsy!"