I think "Single Ladies" was one of her most fun tracks, and I'd still rank it among her best. Top 20 for sure. Perhaps its overexposure through radio and all those parody videos has diluted the appreciation for it, but it is still an immense bop nine years later.
Her 1st 4 singles can't be topped. What a way to start off a solo career
"Crazy in Love" is everything, and "Baby Boy" will inspire a twerk or two, but the other singles...not so much. "Me, Myself and I" is cute and sweet, "Naughty Girl" had a quarter-ounce of spice to it, but those two are understandably forgotten within her singles discography and among most of the general public.