My favorite one is the 2006 John Doyle revival, the minimalism puts the focus on the performances and on multiple rewatches I think is the best all around, although I've always thought all broadway productions have had great casts (pending the 1995 one).
The 2006 has a peculiar way to be in their version of the characters that I like a lot: Sarah's more passive-agressive yet subtle and calm demeanor, Susan's accent (lol), a more strong focus on the power dynamics of David over Jenny, Amy's full on neuroticism and Paul's always big almost mocking smile, and Bobby's playful and charming mannerisms as a kind of defensive mechanism (love the bullet-fast way Raúl delivers some of his lines).