
I started as a Nikon shooter and currently I'm a Nikon shooter. Between both of those times, I shot with a Sony. I had the super A-Mount A99 / A99II (which had zero firmware updates) and an A7R II, A9, A7 II mirrorless cameras. I even worked for Sony for a short while too, so I don’t want to hear that I'm biased one way or another.
However I never really got into the whole Sony mirrorless thing for a few reasons. The cameras felt too small and delicate, I hated the button layout, and the way Sony decided the A99/A99II’s absolutely amazing screen wasn't needed for the E-Mount series, for me was a facepalm moment of epic proportions. The A-Mount cameras would work in ANY position and even fold back onto themselves; the default state of rest for my A-Mounts. Sadly A-Mount was quietly killed off and I'm still not ok with that.