I run Icons and they are awesome on and off road. I have had no issues and there customer service is good. One of if not the best Coil Overs on the market.
If you want to go cheaper the OME are a great product for the price, probebly the best bang for your buck but IMHO not on the same level performance wise as an adjustable Coil Over like Icon's. If you want personal testimony from some one that has had both PM DominicG he recently change to Icon's from OME.
I vote ICON all the way! I just upgraded my front from the OME heavy to the ICON long travel with heavier coils and oil..... It handles amazingly. The OME is a good lift and a quality, durable product. But, these ICON coilovers are in a different league. The coils settled big time at first, but after cranking them back up, everything is perfect. So, that is my vote. Get the IVD coating to prevent corrosion. I'm still waiting for them to release the new adjustable rear shocks. Shouldn't be too much longer!