For those of you who use threaded inserts for your neck attachment, which type do you prefer? I’m torn between the knife thread self tapping inserts and the the ez lok style that requires threads to be tapped. I’ve included a picture showing both side by side. My thinking is that the knife threads may work better in softer woods like mahogany or even rosewood, but in maple or anything harder I have a really hard time threading them in without getting a little bit of surface bulge on the neck heal, so I’m experimenting with the inserts that require a tap but I’m not sure about how well the tapped threads will work in wood. Opinions?