After a quick look through the "showcases", the only directory that looks familiar is http://businesswebdirectory.biz/
(its in my list).
I did a site: in Google, it returned 10,400 pages, so it's very well indexed there. Msn returned 252, and 11 in Yahoo. The outbounds are static, nofollow isn't used, and the robots.txt doesn't restrict access to SE robots.
To my way of thinking this particular directory fits the bill (at least for Google and MSN), and that means the directory script does too. However, most scripts give their owners a variety of options that they can set. For example they can choose between dynamic or static linking;reciprocal, paid or free. So whilst the directory you looked at using Turn-k might have been unfriendly, it doesn't mean all will.