Same question I had (and have been avoiding)
I have it down to superior and BFD, I ruled out addictive and EZ since they seem to be a bit 'limited' in how many drums they support. Although the addictive demo is great and would use it If i wasn't planning on having around 20 pads.
As for battery I also tried out their demo, its good but I feel as though its not so much meant for E-drumming like this as it is maybe for use as a drum machine. It sounded good, but the selection of samples (In the Demo at least) wasn't to my taste.
Sadly of course money is a big issue in this, I think EZ and addictive are in my price range right now, so maybe my drum kit will be done by the time I have the extra money for BFD or Superior.