Ofcoz I would feel the difference becoz he is a different guy for one. His cock would look and feel different for sure. For me, the excitement is not the difference in size but the different of his cock itself. I would anticipated on how his cock would feel iside me and how he use it more than the size but ofcoz I would notice the size for sure. Even if you blindfold me and the first guy pull out then the larger one push in, I definitely could tell the difference for sure. LOL