I've just built another workstation. Specs:
Board: Supermicro X10SLM+-LN4F
CPU: Intel Xeon E3-1271 V3
RAM: 16 GB Crucial DDR3L-1600, CL11, ECC
Graphics: AMD FirePro W4100
Cooling: Dynatron K666 (nice number)
Chassis: Supermicro CSE-731I-300B
Storage: Intel SSD 750 400 GB; Samsung SSD 850 Pro 1 TB, 2x 512 GB Velociraptor
Only downside: The Intel NVMe drive runs at PCIe x2 2.0 which is pretty bad (throttled at 750 MiB/s).