Before I switched to Mac, I ran OpenBSD for about a year on my primary laptop. It was a pretty good experience but my laptop stays plugged in 90% of the time. I took a pretty good hit on battery life and that would have been a pain if I traveled more. OpenBSD really felt more at home on my server but it still makes an OK desktop. Last I checked GNOME3 wasn't fully operational, but I think it was coming along.

You are really encouraged by the communtiy to use packages over the ports system, but you'll find everything you listed in both.