If you're into museums, the Guggenheim is right next to the Met. The Met is superior. The NYC MoMA >>>>>>>>>> SF MoMA. If you go across Central Park from the Met, you'll run into the Museum of Natural History. Excellent, thank you. Do not rent a car, you will regret it terribly. Get a 7-day subway pass, it's good for the busses too. Cabs can add up, I only use them for crosstown travel. For day trips, you might want to consider the Finger Lakes - relax on the lakes, take a boat tour, and visit some of many wineries in the region. I'd rent a car for this, however. For museums, MoMA is nice, but usually crowded. The Met is spectacular and massive. Almost too massive. The Guggenheim is right across from the Met, both are like 3 blocks away from where I live. For stores, Bergdorf Goodman is about as good as it gets for both men and women. I could shop there and there alone and be happy (though SFers will probably balk at the lofty price tags and lack of 98.9% off sales). Met sounds like a winner. MOMA as well. The 7 day pass sounds like a great idea as well.