Season Disks = DVDfab
I use DVDfab only when I need to copy season disks (like "24" etc). If you try to shrink those it takes forever (close to 9Gb to compress down to 4,5) and the quality really sucks.
So I rip them to disk with DVDDecrypter, split them into 2 directories using DVDfab and then I just use Nero or InstantCopy to burn the 2 DVD-r's.
This is not a cheap way to backup DVD's, a 6-Disc season compilation will turn into a 12 disk copy, but the quality is 100% identical to the original...