[aznmode]

For free you can use PIM backup if you're only concerned backing up your contacts, texts, and email. For flashing roms, this is the only thing you should only restore anyway.

For full back up I use SPB. They have a new one out that's supposed to work better on wm6.5. For better intgration with your PC, download and install the exe file on your computer rather than just the cab file. It'll copy your backups to your PC this way incase your memory card gets corrupt or damaged later for some unfortunate reason.