Has anyone had any issues switching? I just got galileo up and running to my specs. I would hate to change environments for memory benefits and then get bogged down in version minutia.

Not sure which OS you are using, but at least on Windows, different versions of Eclipse can live side-by-side in different directories. So you should be able to test drive a new version without messing up your old version (might want to try setting up a different workspace while experimenting though).

True, I meant compatibility with the existing plugins out there though, Maven, Subversion, PDT+debugger, PyDev, etc. Should have been clearer on that point.