I picked up an Intel NUC 6 at work to experiment on. I'm really impressed with the build quality and performance given the price. If you're working with raspberry pis and considering an SSD addon for it to boost speed don't bother and get NUC. The SSD performance is 7x that of the rpi with SATA board I've tested and the cost comes out to about the same with a case.
@foozmeat I may pick one up. The Pi 3 (and probably even the 2) is plenty of CPU for what I need (and I like that it’s arm), but I’ve sometimes struggled with network and storage speed. Good to hear another endorsement of the NUC.