If you can swing the money I would seriously vote for coil-overs. They are just so much more versital as you can change the hight and preload for your need. I was worried about them being finicky but they are a set and forget thing. If I decide to add a winch and a bumper, I can add some preload to compensate.
Another plus about going this route is you give up nothing in the rear spring department. OME's are great stuff but they have their limits as they are designed for a broad range of use. Deaver and Alcan are custom packs that you can have done for your needs. You can actually carry more weight with a fancy set of Deavers than you could with the OME if you get the right set of Deavers. OME has only one option where the Deavers you can get as many leaves as needed for your set up and still have incredible flex. I think my Deavers were a pair of Chinese acrobats in a former life, these puppies flex like crazy! I am not knocking anything, certainly not OME. They make great stuff, it's just that there is more to the Donahoe/Deaver set up then what other forums would lead you to believe. They are not just for going fast in the desert, they are a lot more versital than that! That whole race aspect of the suspension turned me off for the longest time and I finally gave in to the dark side and wouldn't go back. That being said, I love to be able to crash through thing I used to have to milk it over. I won't even mention the washboards, they get REAL smooth around 50-60!