Take the Rocker. There has been months of hype which has built interest. If you don't like it, you will, I believe, be able to sell a used '08 Rocker easier than the 07 Deuce which will be two model years old in six or seven months.
GO WITH THE DEUCE!!!!! I can't bring myself to appreciate the Rocker!! They'd have to sell it for $10k out the door because it would take another $5-7k to get it looking good.
Once you see them in person, side by side, your decision will probably become clear. The Rocker is what you've been waiting for - you pretty much lose nothing if you get the Rocker because as was said above, you could sell it quite easily. You can always pick up a Deuce -maybe not a brand new one in a dealership- but one with low miles.
I look forward to hearing your comparison on how the 2 compare on the ride!
Deuce is two grand less sticker vs. sticker and with whatever caused the Rocker to be delayed so long would have me a little worried. If you ever plan on riding two up the Deuce gets the nod there too. I would throw all my arguments out though cause I'm way biased.
Ridethe Rockerand go with the one that feels right for you. Good luck let us know what you decide.