these lenses are all retrofocus design which should theoretically work well on the NEX 7 which does not appear to be tolerant of extreme ray angles of older rangefinder lens design - i would bet they're superior to any of the existing e-mount lenses
The Sony/Zeiss 24, Sony 50, Sigma 19 and Sigma 30 are all very good on the NEX-7. The Sigma 30, in particular, is remarkably sharp. It's probably one of the sharpest lenses from center to corner at all apertures that I've used on any system. In fact, the corners with this lens at f2.8 were sharper than several of my 35mm rangefinder lenses when stopped down.