Other than it being a good value, my favorite thing about the HPZ800 is that it's like an old car that you can work on yourself.  I stripped out the memory and SSD drive from previous units and added them to this unit.  The build quality is also good.  This comes at the expense of weight.  At 50 pounds It's heavy.  I made a friend for life by carrying the package from the UPS truck to the house.It's not for everybody.  But if you're okay with previously owned and want to save some money, it might be worth a look.