Ask HN: What is the best data storage service lately?

Due to the laptop's 128GB harddrive creeping down below 20GB now, I am in the market for a data storage service. Mobile availability is important. The only ones I can think of are Dropbox, Spideroak, and Skydrive.

Whats does everyone around here use? I get the feeling its a proper choice to move away from any storage related to Google/Microsoft these days.