The best customizable site i've seen is here:
very last link on the page unless you want to pay for an updated version. I've been using it for two years and won both. All the free one will need is a little tweeking.
To understand how they use the cheat sheet to help you I would have to say you NEED to read this article FIRST. That way the cheat sheets and overall rankings make sense to you:
the read is slitly long but definately worth it