I have never used a Vaio, but I would question how much one contributes to being a perfect dev box. You can install Vim, Chromium and Xmonad on any other machine.
im still using some video monitor of theirs from the late 70s to catch up on youtubes.
Again, I haven't used Sony stuff from the 70s, it may well be fantastic. However, that was over 3 decades ago, and irrelevant when evaluating their behaviour in recent times. I certainly won't be buying anything from Sony anytime soon - I simply don't trust the brand.