I have been using Reference Manager (RefMan) program for several years and
recently switched to EndNote+ (both running on Mac).
My judgement is that the EndNote is *significantly* better than RefMan. The
nice feature of EndNote+ is that it has so called "plug-in" module and one can
run the program as a "tool" to Microsoft Word 5.0 (but not earlier versions).
Niles & Assoc.
2000 Hearst Str.,
Berkeley, CA 94709 USA
P.S. I have no association with Niles & Assoc., except as a user of their