Shutters was expensive in terms of points, but I never would have stayed there OOP...and it was so beautiful that it was worth every point.
I miss The Plaza, too and I'm glad that I got to go there before they closed it. Shelburne Murray Hill is a good alternative - not as grand as The Plaza by any means, but comfortable and the staff is great. It's location is not as good either, but we made it to the Theatre District and down to Soho without any problems. When we do another week-end in NY this is where we'll stay. Also, it's an all suite hotel, with a full kitchen so it meets our needs. We didn't cook, but it was nice to have a refrigerator for cold drinks and leftovers. The couch turns into a double bed and then there is a full-size bedroom. The arrangement worked out very well for DH, DS (16) and me.