Look at what's playing at the big non-profit theaters and see if anything interests you. Second Stage, Atlantic, Vineyard, The Public, NYTW, The Shed, PAC, Playwrights Horizons, Signature Theater, & The New Group are just some of many.
Sound like you're focused on theater, but on the off chance you like dance, the Joyce has some good offerings the end of this month. Garth Fagan's company is one I've enjoyed They continue to offer moderately priced tickets compared to a lot of places and I've never had a bad seat there.