Article Directories that actually get indexed

So I know there's a LOT of article marketers here, and I am not an expert in that field yet! Hopefully some of you with experience could shed some light on something for me.

Articles are good to submit around for both direct traffic and backlinks. If I have an article I will usually put it on my blog and then submit it to a few directories.

My question is this...

What directories actually have enough PR to get your articles ranked? In my experience, a lot of directories out there just don't have enough ranking power to get all their pages indexed, so if you take the time to submit your article to them it basically does nothing.

From my tests, I've found that Ezinearticles.com, sooperarticles.com, and articlesfactory.com do a pretty good job of getting every single article indexed.

But on the other hand some popular places like Goarticles and articledashboard just don't seem to have the power and none of my articles get indexed.

Now I know that I can just build some backlinks to the other articles to get them indexed, but truthfully I'm not going to do that. If I'm going to take the time to build backlinks they are going to be to my site, not the directory.

So does any *experienced* article marketers out there have a list of sites that they submit their articles to that actually get them indexed?

Would be greatly appreciated!
Tyson

P.S. I searched around and could find no such list as of yet, all I find is "Here's a list of the top 50 directories" which doesn't say much at all.