I'm going to post my own experiences since I had the OW 2.5 kit for 7000 miles then switched to OME.
When I first got the OW kit, I had a bad front coilover and it made awful noise. Of course didn't know that it had no nitrogen in it until after installing it. So, I had to remove it and get a replacement from OW. That part was easy since they have great customer service but it was a pain to remove and time on my part. The second problem I had with the kit was that I was getting 3.25" of lift in the rear which meant I had to crank up the fronts to match, creating a very harsh ride. This when I have an ARB bumper and warn 9.5xp winch as well. This didn't make me happy and never settled after 7k miles.
So, I took everything off and went with the OME kit. I got just under 3" of lift all around and the ride is actually better. I've had OME on all my vehicles and should have gone this route. OME has the added benefit of no maintenance. This can be a plus and a con but I don't like to take off the suspension any more than I have to so OME was a better choice for me.
Again, just my personal experience.
Scott