Your poll probably has too many choices; I'd say you could legitimately narrow it down to 4 main styles:
North Carolina- whole hog with a watery, vinegar-based sauce
South Carolina- Pork butt with a mustard-based sauce
Missouri- pork ribs with a thin tomato and vinegar sauce
Texas- Beef brisket with a heavy tomato and molasses sauce
Of those, my favorite is the Missouri-style ribs. I don't think anything beats getting some spare ribs, trimming them St. Louis style, putting on a heavy rub, and finishing with a high-heat application of a tangy sauce. The best part is turning the rib tips into a chef's snack/pork candy!