Not to diss the Hondas or anything, but IMO, the GS750 of that generation was among the finest road bikes made. Smooth, strong, comfortable, good handling, good looking, reliable.
About the only issue that that vintage GS750 has as an everyday rider is a gimpy stator wiring setup. But, the issue is well-known and fixes are readily available. Excellent information and forum support available at
http://www.thegsresources.com/_forum/index.phpIf the particular one you're looking at seems decent enough and priced where you want, etc, I'd pull the trigger in a minute...
Good luck with it, if you do get it.
Kirk