These are two VERY different hotels, so if you could describe why these two appeal to you, that could help others help you.

RC Central Park is my favorite NYC hotel. The Deluxe Park View rooms in particular are wonderful. Set above the trees, you can look out to the north over the entire expanse of Central Park. RCCP is a member of Virtuoso, and by booking through a Virtuoso TA, you receive a Full American breakfast for two daily, $100 hotel credit, and upgrade if available.

The London NYC is a less expensive hotel, and if you're looking for value vs. 5-star luxury, it's a place to consider.