You will get lots of opinions here. I check the thermostat housing, upper and lower hoses and radiator itself. Flirting with 208 or so at extended idle would not worry me if the temp fluctuates with the opening and closing of the stat.

My 440 will drop to well below 180 when moving after extended extreme idling conditions like Reno in August at 5000 feet. Mine doesn't spit anymore after I got over the "top it up" disease that is evidenced at lots of car show.