Without wanting to derail the thread too much, another happy Crashplan user here. Yes the frontend software is a bit sparse but it does the job and so far every time I've done a check (or simply used the web interface to access a file remotely), the files have been there without issue.

There are a few little bugs I see here and there but they don't affect the service quality.

I paid upfront for 4 years unlimited (about $280) and I'm just over 12 months in on that.