Not satisfied with Time Capsule no encryption, any other alternatives?

Hi All,
I would love to get the Time Capsule and actually did however when I copied all my data across to it i was not able to encrypt the disc wirelessly. Apparently this is a limitation for Time Capsule - you can't encrypt on Time Machine over wifi.

Wondering if there are any other wireless hard drive alternatives which can be encrypted over wifi?

Thanks in advance

System Preferences > Time Machine > Select Disk > Check the box for encryption below the window.

osxx said:

System Preferences > Time Machine > Select Disk > Check the box for encryption below the window.

Click to expand...

it's greyed out for time capsules
encryption - Time Capsule & Encrypted Backups under OS X Lion - Super User