you can search all from vmoptions(dot)com , directorycritic[dot]com. Very large list and very useful list.
Web-directories.ws has a list of 19,000 directories. There is also a list of 500 Social Bookmarking sites.
Check my sig for another list of directories. You can use the search to find directories that meet your criteria for PR, price, niche, etc.
you get more free paid directories and social book marking sites given below. 1 social book mark 2. add urls.
You had better search them from google, there are many results will show up. Or you can research your compertiors.