Rollei 35te have the tessar 40mmAt the end of the day a camera body is just a shutter in a box. The body isnt going to make a scrap.of difference to photography (unless you need ultra fast shutter speeds, the best af, or a few other things).
Its the lens thats going to be the difference and imho you wont find anything better in any mount than pentax ltd glass and super takumars can easily stand their ground against zuikos, nikkor, rokkors etc. (And vice versa)
Fed4 industar 50mm
Kiev jupiter 8 50mm
But me super have the smc 50 mm and soligor 28mm pk mount. The other lenses (pancolar, mir1b and tokina 17mm) sea m42 mount. When I bought In a market the me super In the box was an old m42-pk mount too. At this point Maybe is better sell some lenses for a super takumar 35mm?