4" Mopar look the best to me.

Casper, might want to change your sig pic or did you opt for the invisible Westins?

 

Here's a pick of my frontier gear wheel to wheel bars. A little spendy but well worth it. I chose them over N Fab for higher weight limits, and mounting to the frame and not into seams like other ones. Having that 3rd step is super nice when something is smack dab in the middle of you truck bed against the cab. There all good products, just pick one and you'll be happy (these bars do ROCK!!)