Hi SleepNYC,
Latex is a highly resilient material so it would be more “springy” or “bouncy” (depending on the type of latex) but there is also a wide range of different “feels” with a latex mattress and some are moreso than others and the type of quilting in the cover will make a difference as well.
Just in case you haven’t read it yet … post #1 here has the basic information, steps and guidelines that can help you make the best choices.
In addition to kmk9’s suggestions and experience … some of the better options in and around New York City are listed in post #2 here and there is a more categorized list with more detailed descriptions of many of them in post #7 here.
Phoenix