I eagerly await the new V8 RM (Mac). I fervently hope the current source and citation system will remain as it is! The formatted input screens following Elizabeth Shown Mills source method (and others too) makes documentation rather easy!
Proper documentation is essential for any professional researcher. In exchanging info with other researchers, clients and students too, I have experienced the differences in other genealogy software. The software of the major genealogy programs are comparable, usable in all segments except Sources and citations! Data imported from one to the other via Gedcom move intact, usually not needing major tweaks....it's workable. But sources simply do not export and import from one software to the other...intact!
As all software companies tout sharing of data, the jumble of sources discourages exchanges...for those, at least, to whom documentation is important, if not essential.
As I said before, RM's Source component is appreciated. When students ask what software to use...RM! The trend is more and more away from the hobbyists towards sound research, proving the ancestors. DNA has nudged this trend too.