We use the trashcan Mac Pros at work to host VMs, and it's kind of a pain in the tuchas: terrible form factor, wicked expensive, and really outdated. These maxed out Mac Minis will be better for us in almost every way.

As a home user, I just might get this instead of building another hackintosh, but my guess is that it will be less interesting priced with a usable configuration. If the memory and storage is user upgradable, on the other hand ...

Edit: if I max out a Mac Pro's memory and storage, it comes to US$4,800. A comparable Mac Mini is US$3,300, and I can spend $800 to double the storage to 2TB. I definitely see us getting these at work.

For home use, I like that I can upgrade the memory, but Apple is predictably marking up the storage big time.