trying to decide Jawbone Up or FitBit One

Hi - I figured this would be a good place to come for advice.

I'm hearing Pros and Cons for both. I would like for something to log stairs because I have quite a few of them at work and would like to challenge myself by climbing them. The accuracy of tracking sleep is not as important for me because I already know that I don't get enough sleep. They cost about the same - I'm wondering if someone has had both and can weigh in on which one they preferred.

Whatever I get, I want it to work EASILY with this site because I've been using the site a lot.

Thanks!