I don't have any experience with the Rollei, since I'm not a huge TLR fan, but once you get used to the Hassy I find it's easy enough to use for everyday use, and I generally use it for snapshots of my friends, out on the street, etc. I rarely get comments about the camera if people notice it at all, and usually ambient noise is so loud the mirror slap isn't an issue. If people do pay attention to it, I use it to my advantage to get a nice posed picture or people ignore it after the first one or two shots.