OK, I can see the point when there are no burners in some of the PC's you use, I don't have that problem. I am constantly writing and rewriting CDRW's and DVD+RW's and CDRW's take no time now, plus if it's a small file that you keep editing you just add the file and the date in the name, then just re-format the disc when it's full, takes no time at all. I guess it's also what were used to. I used to have a zip drive, which I never used, cos I couldn't see the point, again because of media cost, they don't even have the convenience of USB functionality if it's an internal drive.
To be honest, in your situation, I'd probably end up taking my DVD+RW drive to Uni with me and chucking it in their PC's, but I guess that would be a pain, especially as it's IDE. Actually, I'd probably buy a cheap CDRW drive and leave it in a PC at Uni, if I could guarantee being able to get on that PC, which you probably can't.