The HP Z200 Is a decent desktop PC. I have on which I use constantly for work. I run a number of systems off it including CRM tools, office, and order loading tools. Over the past year whilst I have had it has coped with running all of this along with fast internet access (although this is aided with my fast broadband). The processor is what makes it a reliable business work machine; running off an intel Core i.5. I also downloaded a racing game on the machine that runs perfectly without any hiccups.
It comes in a standard black and looks just like a standard desktop so nothing particulary eye pleasing sticks out.
Dust can appear at the front of the machine but this is easily blown away.
Over time I have noticed the machine becomes loader which can be quite irritating when trying to do work and concentrate.
It is very easy to use and similar to many other desktops. This allows you to plug in and get straight on with your work.
All in all though I would consider this machine as ideal for anyone who needs to work from home dealing with buying and selling.