Malik has a good point. I would advise that you do both. My advice for what it's worth, pay $5.00 and get yourself a licensed copy of Daemon Tools Light. This will allow you to create a very secure encrypted volume on any given hard drive. With a strong password (16+ digits of upper and lower case letters and numbers) it would take over 37 billion years to brute force it, Moore's law aside. The encrypted volume you can create can be a few MB or it can be the size of the entire drive. When the volume isn't mounted it will just show as a single file on your computer. When you open it and enter your password it will mount as a virtual drive and you can use it like any other physical drive. If you still want access to those files anywhere, then, if budget allows, MegaUpload only costs $11 USD per month and gives you 2TB of zero knowledge encrypted online storage and messaging. The encryption is done before your files are uploaded so not even Mega has any idea what you're uploading. The downside is if you ever forget your log in credentials, you're never getting your data back. Your password is part of the decryption key, so no password, no more files, Mega can't unencrypt it without the password. I've been using Mega for over five years without issue. The only complaint I have ever even see is "It might get raided" This happened once in 2012, no trouble since but who cares. If it's mission critical you should have multiple backups anyway. Hope it helps.
Good luck brother.