Not sure what you mean by "small" in the original post, as most of the Zeiss retorfocus wide angle lenses are much bigger than rangefinder lenses.

You can't go wrong with any of the Zeiss lenses in the Contax mount. I have used most all the identical Zeiss lenses in the Rollei QBM mount since they were contemporary lenses in the 1980s and they are excellent performers. I also have all the Yashica ML wide and normal lenses in the C/Y mount and they are also very good.