To answer your question I throw SK square bills, Normans Deep N, Little N, Fat Boy, Bomber A's, Rapala Clackin Rap, Lipless mainly from Academy, Excaliber, SK, Academy H2O crrankbaits are a great value. Color wise any natural color, Black/Blue back Chrome sides, Red, Browns with an orange bottom. I'm gonna provide a couple of links to some posts and articles here on this site, there is a wealth of info.
http://www.bassresource.com/bass-fishing-forums/topic/60793-best-of-bassresourcecom/ Go down to the crankbait section, Chris knows alot about crankin and shares some information
http://www.bassresource.com/fishing/iaconelli_crankbaits.html Iaconelli article
http://www.bassresource.com/fishing/crankbait_fishing.html
http://www.bassresource.com/fishing/crankbaiting.html
http://www.bassresource.com/fishing/crankbait1.html go to bottom of page and there is a list of crankbait articles to read
http://www.bassresource.com/fishing-lures-articles/ A bunch of crankbait articles, how to, color, etc