One more vote for the Ace. I have a Sport, but bought some take off Rubi rails for $125. Go great with the Ace. My wife agreed to buy the Ace because her and the kids need a step. Even though I'm 6' 1", I like having a step too.
Only down side to the Ace is the fact that they mount below the Rubi steps. Since most rails mount at the same height as the Rubi rails, this means you lose a bit of ground clearance with the Ace.
If you're not rock crawling a lot, it doesn't matter. They still work for crawling. You will just ALWAYS be 'ON' your rails.
Also checkout the LOD rails. They have an integrated step. Pricey though.
But you have to go through things like this to get the step raised up. I like the after product but installing was a PITA.