[synce]

CSO is a horrible format. I have an old CSO of Disgaea and when I decompress it to ISO the game gets stuck at the first loading screen. Several other games have similar issues, like slowdown and such. I say upgrade to 8GB and don't compress anything. A couple years later that compressed file will probably not work

[CowsRule]

Whenever I use UMDGen, I just the "Optimize" Option, It gets rid of the UPDATE folder and the UMD Padding. I also hear people get rid of the language files on the ISO Somehow, I know doing that saves a lot of space.