From your list I would choose carbonite for relatively unimportant personal files. This is cheap but outside of Ireland and with no local support. It the data is absolutely essential and you want support in Ireland I would pick
Backupanytime online backup 
91 441546, Data Management, remote Backup &Restore
We have almost a terrabyte of data on our backupanytime account and our experience has been very good. They are there to do business and unlike most other providers we contacted, they responded promptly and with clear explanations and a helpful procedural approach. We got to bargain because of the quantity of data we have but their standard price per gig is compeditive.
Regina