I'm afraid I did the same... and returned one after a few short days... I think its pretty well known now that lenses are as sharp or people feel.... sharper than on other body's.
Lenses don't change sharpness with bodies; lens sharpness, AF accuracy, and lack of extraneous vibrations are three different things. Bigger pixels (than you're used to) are going to look sharper at 100%, and the lack of mirror slap in the R will improve things for people whose shutter-speed choice is right near the cusp of being problematic with mirror slap. With no need for MFA, there is no chance for that to be off.