file back up services?

This weekend I spent some time looking into online file backup services. I am paranoid about losing my files. I have an external harddrive but it has started making funny noises so that's what prompted this sudden search.

So far I have looked at:

Xdrive (their web site gives me a file error when I try to upgrade to the 50GB so I am leary about it)

Carbonite (their free trial isn't working for me right now, grr!)

Mozy (cute site! I haven't tried the trial yet)

Does anyone use this sort of service and can anyone recommend one? Preferably one that isn't really expensive, like no more than $10 a month.

thanks for your input!