I see that with many backups and images the ability to compress, encrypt & password protect. Is compression ability pretty standard across the industry? I'm looking for a solution that will compress the "best" whatever that is...I guess make the smallest sized backup. With a 250 GB drive that is about 200 GB full (mostly songs, video and some software programs) what size should I end up with if an image is made/ compressed / encrypted ? Also, is it safe to save an image to a portable hard drive (I hear some fail after a while) ? Or is there a cd or dvd an image can be saved to that has enough space for an image to be saved to? If so, is there any particular brand that works best or brand to avoid?