I'm trying to decide whether to go with the "Pro" or "Ultimate" version of Windows 7. The decisions mainly hinges around how useful I find 2 of the features in the latter version: BitLocker & AppLocker. Let's do one at a time here... So in regards to BitLocker. What say you? It "sounds" like it provides system wide encryption, much the same way TrueCrypt does. Am I correct? I mean not nice little containers like you can make on TC, but as far as encrypting the system partition/OS... similar, no? Will this then ask you to enter an encryption password when you boot your computer, like TC? I'd love to hear opinions from people as to how useful they find this feature, and what exactly it is/does. Thanks a ton in advance.