But for niche/local directory, the good one is the one that have high targeted traffic. And users actually using your directories and not just for one time visit to submit their site only

[/quote]
1-100 times visitted or pr doesn't really matter to me... my job is to be seen so my submissions are seen. When every one sees your site in a given area at the top of the search trust me you will get talked about, and you will get people using your board.