I work on multiple systems all the time and being we are an Avid house, I use the Avid codec. It's not exactly small, but compared to Animation or AVI it's about 20% the size and gives really good quality. If you can't transfer and link your projects back up, you might want to try it.
Avid Codec for Quicktime
Johnny Cuevas, Editor
Thinkck.com
"I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work."
---THOMAS EDISON on inventing the light bulb.