4. Lenovo ThinkCentre Edge 71
Here's a system that's designed around the idea of getting work done and comes with the long-standing Lenovo styling, which is to say black and angular. The Edge 71 family starts with this highly competent second-gen Intel Core i3 2100 powered model and can be configured with anything right up to a Core i7. This explains why the base option is just 2GB of DDR3 memory, but that's enough for the office basics and the supplied Windows 7 64-bit allows for expansion up to 8GB.
The base unit provides dual-monitor output, and comes with a host of business security features inducing USB disable, Computrace and Auto PC lock that uses a webcam to detect when the system is unused and locks it.
With smart touches like a spill-resistant keyboard, a design that embraces maintenance plus the choice of a full tower or slimline desktop the Edge 71 is designed as a solid workhorse.