We have Solidworks professional but looking over the features I'm not sure it is really needed.  The only features of professional I have ever used were Toolbox and FeatureWorks.  However toolbox is clunky, slow, and incomplete compared to just pulling in McMaster models.  FeatureWorks is nice to pull in a IGES or whatnot and recognizing the features.  But thinking about it, I almost never really use FeatureWorks (maybe twice a year, even then it isn't essential)...is it really worth paying 15% more per year to keep professional?

Thoughts?  Anyone else thought about this and did a pro/con analysis?