Which states probably thought the new Constitution would benefit them the most?

The tricky part of getting the Constitution ratified was trying to appease every State's complaint and provide for every State's security; the Constitution was about *uniting* the States under the umbrella of federalism while maintaining State sovereignty--imperio in imperium, which was the totally-unique-in-the-whole-world-throughout-time invention of ours (or rather, the Founders.) The "benefit" was to all the States who wanted to be free from British rule, so the Constitution was written in such a way as to include and address *all* the States' concerns to the greatest extent possible while not negatively impacting or offending or disenfranchising any of them, a nearly impossible task.