Fe PoLR I think is easiest for me... probably has something to do with control over my creative function. Because i can turn it "on" and "off" it's easier to judge it's effect on another person in both situations, so I find it's generally easy for me to detect weak Fe. I'm also pretty confident at detecting Ni PoLR, like when someone's doing something in an incredibly inefficient way and I fancy I'm being helpful in my attempts to direct them but find out soon enough that I'm just irritating them to hell