Do some searches, LOTS of info on this, in fact I thought a similar poll was already done.
You can find pictures too. Most seem to prefer side steps over running boards as it adds a sportier look.
Yes, the running boards do cover the bottom more if that's what you want, but then this is an SUV and sits higher anyway. The boards looks a little boring in my opinion.
The Acura side steps (black or chrome) look good and cover the bottom more than some of the aftermarket, like the Maniks, which are out further from the body. It's really a personal choice.
Study the pics.