I use a Yashica Mat 124G and the Rolleiflex K4B. They are both fine cameras with excellent lenses and I seriously doubt you will be disappointed with either camera. In my hand I think that the Rolleiflex is a tad smoother in use, but this could be an expectation based on reputation rather than reality. On the other hand I think that the Yashinon lens in the Yashica Mat is just a tad more contrasty with color film than the Tessar in the Rolleiflex, but again I would have a very hard time quantifying this.