I am looking for a rig that will run well and will not destroy my electricity bill. I am not looking to be cheap, I want this to be a powerful rig, but I don't want to go for the "new, top of the line" stuff. I am looking for the current consumer market stuff that will be easily traded off when looking at what it can compute vs. its electrical consumption.

What would this efficient rig consist of?

Thanks Bitcoiners