Varies. For drawing, as anyone who's seen my folio can see, I tend to draw from Normal up to Big, though I have some characters and drawings that are Normal, Small, Petite, or Huge.
What I prefer to see varies on body type. A long, slender build, I'd rather see something from Petite up to Normal, a more average height/width ratio I prefer to see Normal to Large, and a thicker build (what some would call variously 'broad', 'stout' or 'chubby') with solidly Large or occasionally Big (though Normal can work nicely too).
Given the varied response there, I'm not going to vote since I'd need one and a half or two votes or something to cover.