How large a partition is needed for Ubuntu and OpenSuse?

[Unstuck]

I just found out that by moving /home to its own partition, I can access it from multiple OSs. Since I'm interested in the next version of openSuse, I thought this would be nice, but I'm not sure how large I should make the partition that will house Ubuntu and Suse. Any thoughts?

BTW, if it matters, I'm following the directions in this Psychocats How-to.

[Pumalite]

Make it as large as you can.There go your settings and everything else you want to stick in there.