There is a thread a few posts down asking exactly the same question, maybe you missed it. Anyway there is a new free script available http://forums.digitalpoint.com/showthread.php?t=1060474
I'd say none of the traditional ones that everyone pimps are that hot. Look for some creative way that isn't so restricting. If you're a master coder thats one thing... Some come with mods but they have their cons as well. If not you're dependent on someone to do your mods and that can get costly. Not to mention you need to find someone trustworthy enough to let inside your businesses back end; not too many of those around...
Indeed. If you have the time and skill, go custom. Do things that are unique. That's the best way to get more business, word of mouth, etc.
You can use PhpLD with many mods available for it. Like page rank update, Deep Links, RSS Feeds and may more. Search with google 'PhpLD free mods'. I t will help you a lot to find free as well as paid mods.
I'm using phpLD for my own web directory and I think it's a great piece of script. Unless you decides to go professional, a free version; that is, version 2.x, will be suffice.
There are many around, the best one is the one that offers what you are looking for in a directory. There are demo's at most script sites, try them out, look at the features, ease of use for both yourself and your users, look at support etc..
PHPLD is the best... i have recently used it for one of my WebDirectory and i found it very user friendly... infact u dont have to do a lot while using it.