At my job, I have access to all three levels of ArcGIS licensing on my computer.
Does the license you are using in ArcMap make a difference on the speed of ArcMap?
I'm pretty sure that the drawing of the map isn't affected, based on tests I've done myself. But, it really does seem like some of the ArcToolbox tools do work faster in ArcInfo. I'm just trying to either validate my suspicious or prove I am going a bit crazy.