I use Se Nuke Xcr.
I think you should try Article Kevo. It has free 7days trial version.
How do you like Se Nuke Xcr?
I have a recommendation if you can wait 2 weeks more for the launch.
Let's just say we do numbers.
I'm currently checking out Rankwyz since I use my own content. Seems to be a decent bet!
If you want to post into real web2.0's (not jcow/elgg etc crap) stick to senuke Xcr/Magic submitter.Combined they give around 70 web2.0s. You can also try sick submitter web2.0 packets they are pretty decent.