Just this, great for a hobby machine, but honestly it's next to impossible to use as something you have to relay on.
For me, it's just about updates and iMessage. I use iMessage a lot, and their security means it doesn't work on a hackintosh. Next are the updates. The issue here, is that graphics doesn't work, or the machine doesn't boot, etc. All fixable, but often you have to debug it once or twice.
Problem I had with the Mac Mini was I bought mine as the basic model, and its so slow to use, the hackintosh is better. However, nothing works as well as my MacBook for actual work.
Right now, personally, I'm waiting for the 5k iMac and when it can be used as an external monitor. I upgrade my computer every couple years, but my old Apple Cinema Display is 7 years old now, so I really need an iMac to be usable as a 2nd display. Hopefully september will bring that update.