The HP Z1 looks like a great all-in-one PC for people with a small desk, or rather use their desk to hold 2-3 all-in-one PCs. The Screen and the performance of the Z1 also looks pretty fast.
It also looks pretty to upgrade and fix because of its tool-less case.
Nope, but it is very easy to open the case without screw drivers like opening those all in one printers to add ink. All you do is lift up the monitor cover hinge to clean the fans.