Hai,
Just wanted to point out that there is a rather interesting project on Kickstarter right now.
For any of you using the SpaceNavigator and want a little bit more comfort.
http://www.kickstarter.com/projects/1441494659/the-space-dock
I'm not affiliated with them or anything, just a backer. But they definitely need some help on reaching the funding goal, so if any of you is interested check it out