Dude, I was once in your shoes looking for the perfect software.
After trying out numerous softwares like Magic Submitter, SEO Link Robot, Rank Builder, and many others... SeNukeX is, as usual, the best out there.
SEO Link Robot has a very low success rate. I was trying out the trial version and if I remember correctly, the success rate was like only 20%. Only 2-3 out of 8 sites were submitted. I gave up and tried Magic Submitter.
Yes, MS is probably the best out there with a success rate of 70%+ but the problem is if you were to add your sites, it can be bloody damn tedious to "program" the software to find the registration page and such. It took me nearly an hour just to get 2 sites programmed right.
Not just that, all of these software are damn bloody slow when it comes to registering accounts and submitting your content.
Then I finally gave up and went back to fully learn how to use SeNukeX and I was so impressed that I never took a peek at other softwares.
If I remember right, during the few recent updates there are more web 2.0 accounts are being added.
SeNukeX is truly the king in linkwheeling.
I usually use SeNukeX for building the linkwheel then I would switch to BMD to do my social bookmarking needs, then AMR for article blast to my tier 1 links, Scrapebox for blog commenting, and Sick Submittter for profile links.