HA! I was on Long Island, NY all this weekend. I could have shared countless firsthand experiences with you concerning this topic.
Anyway, depending on how its set-up & what terrain its going to be subjected to most frequently, leaf choice should/is certainly a consideration. The lighter it is & the lighter the axles & smaller the tires, you can get away from running "lighter" equipment & less lift.
On the other hand, if its going to be running 1 ton axles, heavy aftermarket add-ons or heavy homebrew modifications & BIG tires, DEEP gearing and aggressively driven in BIG rocks, I would consider a leaf designed to carry more weight and built to handle tough stuff. Otherwise, it'll be a piece of junk & suffer from fatigued suspension issues early.