I shoot 100 grain broadheads and points because my arrows are right on the cusp of being undersplined. The 125 grain heads would make them undersplined. The 100 grain heads tune perfectly out of my setup so thats why I use them.

A lot of time you will see that the same model head in different weights has a different cutting diameter. This is important to some, not to others.

I used to shoot Thunderhead 125 grain broadheads for years and never complained about them. I have not had any problems shooting 100 grain heads either. Once again, this question all boils down to personal preferance and your setup.

Hopefully this post won't open a can of worms. Ooops, too late!