Quote - Something that you might consider is what else you do with the files.  If you edit the files, you will have to uncompress, edit, and recompress.  Also some utilities don't always work with compressed files.

I'm a really simple Poser user, I pose and render with a few tweaks in between. Do you know offhand which utilities might cease to work with file compression enabled? I don't think I have any scripts that edit files directly. And as hornet mentioned, I'm worried about data corruption not just for general use but for long time archival interests.

I'm kind of running out of room and since I'm still out of work and barely have enough to pay my car loan/monthly bills, I guess I'll just have to either not save files or compress them until I can afford a new hd.