Planning on doing this next summer myself. The OME springs are firmer and provide a better ride. They, from what I understand, should provide more travel while wheeling and grant more articulation. I haven't done any extremely rough wheeling yet with my daystar but drove over a pretty uneven rock bed the other day that had some very large rocks. It performed well and I didn't have any issues. I would like a firmer ride though and the added clearance. Happy wheeling hope this helps!
2006 - 3.7L, Superlift, 265 Guard Dogs, 30" LED Bar, Bilsteins, Spidertraxx, Solid, Hypertech, Rola, Rear Led, Led Tails, S4xC Skids