The answer is no, there is no difference in print vales made with a condenser and with a diffuser enlarger. This assumes that the negatives are developed to the proper Gamma needed for each type of enlarger. I refer everyone to Richard Henry's book Controls In Black And White Photography where he actually made tests concerning this question and presents a full discussion.
So is the snap quality I mention merely a figment of my imagination? Perhaps in my OP I should also have mentioned that the preference I refer to is probably limited to smaller print sizes, up to about 20" x16".