Really is a matter of personal preference. Northfield will have higher end scale material as stated above (stag, horn, MOP, etc.), slanted bolsters, pinched bolsters, long pulls, swedging, etc. The Tidioute label will lack this level of finish. The GEC label will generally have Northfield level scales with Tidioute blade finishing on 440C blades as opposed to the 1095 on the Tidioute and Northfield.
Since most people buy based upon scale preference, I really wouldn't worry about label, but that is my thought. I have an equal number of Tidioutes and Northfields in my collection. But then, I am not a huge fan of stag (gasp, I know).