Sony FE 70-200mm f/4 G OS

Its a small, light and compact lens but yet produce sharp and has fast AF. I did not see a big difference between the f4 and the f2.8 in terms of bokeh. Also, latest A7 series camera now has better high ISO, i often shoot indoor using this lens with 3200-12000 iso set up, and produce sharp and still can cropped the image with out worrying the quality.
That said, it is the perfect lens to own.