File Based Encryption

Hi,

Can anyone recommend some file based encryption solutions for Windows XP Pro?

So far I have got:
1) Native XP EFS (any thoughts, it seems very painful for the end user who is expected to constantly be importing/exporting certificates)

2) PGP seems to have some good products

3) TrueCrypt seems the best free/open option

Can anybody recommend any more? I'm looking for the big names, not the undiscovered little app.

Thanks,
Mike