Best lens in a Mamiya Six folder ?

I am looking to buy a Mamiya Six folder, probably late model such as an automat or automat II.

These cameras are available with the coated zuiko 75mm lens or the more rare mamiya sekor lens.

I am trying to work out which lens would be the best. Are there any other lenses I might find in this camera if I look long enough ?

It seems to me this camera will allow quite rapid shooting because of its design, but I would forsake the automat convenience for the best lens possible.

I use Mamiya Press cameras and find those older mamiya sekor lenses to be really good, but I think the Mamiya Six 75mm lens labelled mamiya sekor predates the press lenses, so I'm not sure this is a valid parallel to draw.

I would appreciate information on lens choice, especially from people who have used both types.

Many Thanks.

Aren't both of these lenses 4 element Tessar-types? If so there shouldn't be any significant difference and, with such an old camera, condition is probably the most important factor.

I have the zuiko 75mm 3.5 it is tack sharp, good contrast for the day, I agree with BobMarvin that condition would be my deciding factor. If the camera has been sitting unused for a few years it will likely need to have the light seals replaced and the shutter serviced. Of course the bellows needs to be light tight.