There was a thread a few months ago in which a load of us posted screenshots of our workspace and also the Plugins folder. Of course, some users find some plugins more useful than others, but if you study the various postings it ought to give you a rough straw-poll of which plugins prove to be generally the most useful.
One or two people seem to have gone completely overboard with the number they use, but many of us already realised...like yourself...that more is not necessarily better.
G