I agree - beta testing is not for everyone. Version 5 is pretty stable and e prescribing is great.
Until you feel comfortable I would not do it - watch the videos, play with version 5 offline- I took version 4 and put it on my laptop - moved over backup copy of data (from AC backup) and restored - got it working and then upgraded to version 5 on that laptop. Played with it for a while before I took the plunge and even then there were some quirks and since I have Windows 2000, XP Home and Pro, Windows Server 2003 and Windows 7 it did some take some tweaking to get them all loaded (but they do all work).
I have been using the beta live for as long as he had it available and it does work good now. One or 2 more bug fixes and he will probably deliver a "release candidate" or something and then everyone should take the plunge, but just keep watching and learning - I know Tech Support is working on a "Users Guide" and has been developing some different "chapters" with screenshots and instructions (only a few so far), but will continue to get better.