Could you talk about this a little more? I have never used C9. I use git and an IDE on multiple devices (Linux on home desktop, Windows on old ass laptop, macOS at work) so I can work in basically the same environment on any of those devices any time. Granted, I can’t just pull up a browser on any device, but that seems like it would be a rare use case (for me, anyway).
Sounds like you don’t need that MacBook anymore, wanna sell it to me cheap? (: