I have used one of these three, but would like a comparison (likes/dislikes) from those of you who have used 2 or more of these products for record keeping, prescriptions, analysis, projections, etc.  I'm interested in advantages/disadvantages discovered by an honest comparison.  In other words, I don't want another "I've got this one and it's great" followed by "I've got a different one and it's great" thread (although there is room for all 3 to be great ...  ^.^).   I am interested in a real comparative breakdown by end users.

Thanks for the input,