4 because of season 1, which was a throw-back to 40's noir and great acting by BBT et al, but season 2 was a bad drug cartel cum horror movie & season 3 was awful, not for the actors, who as usual were great. However, the writing descended into a cross between peyote intoxication and film school "let's try everything." Hope they got new ones for season 4.
Loved that they borrowed Graham Greene from Longmire for the casino boss.