I've owned one for almost 2 years. The Rollei 35 RF is a good basic camera, a virtual clone of Cosina's Voigtlander Bessa R2 except for the frame lines (40/50/80), cosmetics, & longer warranty. Unlike the R2, on which 35 & 90 frames are combined, none of the frame lines on the 35 RF does double duty, so there is a nice uncluttered view of every frame. At today's prices, it's a sensible buy. The 80 mm frame lines actually make more sense than 90, given the 25 mm effective base length, in that it maximizes both focal length & aperture. A longer focal length requires a slower lens, like the CV 90/3.5, while the shorter Rollei 80 can be matched with a maximum aperture of f/2.8. Same for the CV 75/2.5, which is actually 77/2.7, according to Popular Photography.
The 40/2.8 Sonnar is a little gem of a lens. Very compact, it's a little soft in the corners at wider apertures, but that was characteristic of all Sonnar lenses. It's also a little soft in the resoultion of very fine detail but very sharp otherwise, which gives a nice effect to people shots by not accentuating every zit, line, & wrinkle in their faces. Color saturation is outstanding. It is capable of taking stunning photographs.