The camera in my avatar is the Ansco Titan, which was used on "Maisy at the Wetlands." It's a difficult camera to use if you compare it to a modern 35mm AF SLR. I've been using it for about a year, and it's now my point-n-shoot. It folds up smaller than a 35mm SLR and shoots 6x6cm negs.
I did a review on it in the equipment review section. It has a simpler anastigmat lens design and "guestimation" focusing (meaning no actual focusing aid or indicator). It does have a DOF scale and I use ISO 400 film with it so I can keep the aperture up at f/8, f/11, or f/16, which helps counter my poor distance judging skills. You might notice that "Maisy in the Wetlands" is not as sharp as the others. I have gotten razor sharp images from it, so I know it can do it. I think that the softness comes part from the lack of focus assist and I haven't worked out what the min hand held shutter speed is. Anyway, even with a smidge of softness the 6x6 neg still prints nicer than a 35mm neg (IMHO).
The Rollei is a TLR and is razor sharp, and easy to shoot handheld at slow shutter speeds (still razor sharp at 1/30th). It has a planar style lens design, and it is amazing. Right now my Rollei is jammed up waiting repair, but in the six months that it was working it quickly became my favorite camera.
The Rollei has a waist level finder ground glass that shows you almost exactly what you are getting, and assists in focusing. It encouraged me to get a waist level finder for my Pentax 67II. I like the WL finders, especially for shooting kids; it makes it easy to get down to their eye level or below.
All three of these portraits were taken "on the go". I prefer environmental portraits to studio set-ups. I just find them much more interesting to print and to look at. I like to shoot people doing their thing, or posing with their stuff (vehicles, work, hobbies, home, etc...)
Here's a pic of the Rollei