For most of us, most of the time "system managed" is the right choice. There are folk that want to try this, so why not?
Only you can determine which is right for your PC. Why is that? I've yet to encounter two PCs in the exact same configuration.
It is system set for all drives now, like you guys told me to and is using 15,259 MB but it recommends 22,888 MB should I alter it?