I built myself a desktop one in 2013, realising for studio work it doesn’t move, and for much other work it’s tethered to a big display, and for health reasons it better not be a laptop I hunch over all day.
Pretty sweet machine at the time, very quiet, and it still packs a punch enough to be my main workstation. As time has gone I’ve valued it more and more. Recently I put in a quiet GTX1060 and 2 x 8TB enterprise drives in Raid 0. I might get another 16GB RAM next. Hardware reconfiguration has usually been a breeze, all the way to connecting an old 17" display over VGA to use as secondary.
System updates on Hackintosh are not trivial. I’m a little concerned that many new macOS features seem to be tied to their custom chips - T2 at this time etc. Am staying with macOS 10.12 for now. Logic Pro X will eventually push me to try Mojave, forcing me to allocate a fair bit of time to read, plan, trial, execute.
So which Macbook to buy? If I was buying now, I’d go for the 13" MBP and, circumstances permitting, I’ll replace my Hackintosh’s mobo+cpu+ram down the line.