I initially skipped over that photo pretty quickly, but I decided to open it in a separate window to scrutinize it further. It really shines on its own, and I figure the brighter photos cause one to focus less on it. (I do a lot of essay-style photo series, so I think a lot about presentation in these sort of situations) Definitely worth printing.
The 4th one also stands out to me. My first instinct would be to crop out some of the left part of the frame since it's mostly dark, but at the same time I really enjoy the compositional balance. Is there much than can be pulled out of the shadows?
On the topic of lens contrast: I don't think I fully understood the concept of 'micro contrast' until I started shooting concerts heavily; before I paid more attention to film/sensor contrast. Generally I shot with a D3 and the 85mm Nikkors, but I always got faces in proper exposure but pretty flat, so to speak. Nowadays I'm shooting with this lensand an M8, so I have to be a little more careful in exposure. But its so subtle how faces are rendered, and that makes all the difference.
Side note: at first glance, none of these photos scream 'vintage lens'. But they have a certain look about them that stands out. I also like the creative use of flare--is that something visible through the A7 finder?