I would highly recommend the Wiikey as well. I've installed it into about 30 systems, and no issues at all. I originally was using the CycloWiz, and installed that in about 45 machines, but it was always problematic (I did swap out for the NEWEST version for everyone, when I got them in - thankfully the supplier exchanged the stuff for FREE for me!)
The WiiKey has never given me any issues, so I highly recommend it.
As for the "To Mod or Not To Mod" argument. I think modding is good. Personally, I buy all of the games I like, but even with the best of care they get scratched (or in the case of my Xbox 360 - the system scratches them up just fine) so I am grateful to be able to use my backup discs regularly, and then replace them again should they become scratched. This way my original is always in perfect condition.
Anyway, not here to argue whether you should or should not mod, just suggest that you do - even if you're only backing up your own games.