First, let me say good luck with the sale. But if you end up keeping the Connie, we certainly understand. Here's a brief rundown of my experience in deciding between Diavel vs. C14: The Diavel is an impressive bike. I test rode one last fall. But I opted for the C14. The Connie is heavier, but has more power if I'm not mistaken, and also perhaps has far less expensive maintenance needs. Far more after market support for the Connie, far more comfy on long trips also. The big thing for me was that I could buy TWO Connies for less than the price of the Diavel, and still have enough left over for a KLR. But that's all just me. Overall, there are far too many good bikes, and far too little time!
Hope your sale works out, whichever way it goes.