South Beach Diet Plan?

Has anyone had success doing the south beach diet? I am looking for a long term healthy eating plan. I don’t need a quick fix but I do need something to keep me motivated with a decent list of acceptable foods. I can’t eat plain chicken and veggies 24-7. Has anyone done this program? Any other suggestions? Biggest loser? the zone diet? michael Thurman blueprinting plan? Atkins?

Any other ones I am missing let me know. Just looking for options and others experiences.