A Mac might work in your situation.
Macs can host Linux natively with Boot Camp, or as a virtual machine with a product like VMWare.
Also, since Mac OS X and Linux use the same compiler (gcc), and can use many of the same libraries, many Linux apps can be compiled to run natively in Mac OS X, including X Window apps. In many cases, the software is available through a package manager, ready to download and run on Mac.
Only problem is, we have over 2000 customers we’d have to switch over. That’s not likely to happen.