I just got the single stage 4.5lb drop in trigger and installed it into my 50 Beowulf build. Holy hell that thing feels way less than 4.5lbs. To me it feels like the second stage on the Giessele G2S. I need to take it out now and see how it shoots.
Most of my AR triggers are ALG ACT triggers. They have worked pretty good for the price of $60. However, if I can find another POF trigger for $100 if I build another AR I would definitely go for the POF again.