CrashPlan's java based software just basically died on me after a while, so I switched to backblaze, which had much better performance. But people are now talking about bad experiences when they actually try to restore from backblaze. You can't win with these things it seems.

Currently I do Laptop + Time Machine HDD at work & a backup file server at home which syncs with my laptop with bittorrent sync and the file server is backed up by backblaze.