Man, I am sorry I am late finding this guys. I know that Snowman and I use DisplayFusion for multimonitor setups.
If anyone else out there is interested in it, they are running a contest of sorts. But it started in August and ends at the end of september.
Anyway, there is still time, if you want a free pro license for DisplayFusion, check the external link above, or go here.
http://www.wallpaperfusion.com/News/2012/08/earn-free-displayfusion-license/