It's really easy nowadays (if you have the right hardware), you can directly install the official combo update and then it usually only requires one extra reboot to update the graphics driver and possibly repatch sound driver for me, but that whole thing is automated and takes 2 mins extra for every point update every 2 months.
I've been running a 4790k + 980Ti since 10.9 came out, always kept it at the newest release and it's given me much less trouble than Windows in that timeframe.
As long as you have the typical well supported desktop hardware it works really well (intel + nvidia or select amd cards), only if you want it on a laptop or officially unsupported hardware then it quickly becomes a giant pain.
I've been running a 4790k + 980Ti since 10.9 came out, always kept it at the newest release and it's given me much less trouble than Windows in that timeframe.
As long as you have the typical well supported desktop hardware it works really well (intel + nvidia or select amd cards), only if you want it on a laptop or officially unsupported hardware then it quickly becomes a giant pain.