I think that on most models a 55cm frame looks the best, just in terms of proportions. I'm also a munchkin riding a 54. They look well proportioned also, but just a tick cramped. The really little bikes look kinda strange, but some big bikes, say 61 and bigger, just look ridiculous to me. Their steerer tube is as long as my seat tube!

None of this has anything to do with the original post, but whatever.