I dont like too big gapes. Tight is better.
This goes into the right direction for my taste:
http://galleries.showmegape.com/free/1/pics2/JASMI/1/4/120508/content/pics2/4JASMI/b/1.jpg
http://galleries.girlsgotcream.com/pics/622/fdbkjwehgskhganjkdg/1004634/chance/a008.jpg...