I have no experience with the Montecs yet but I have the Block and
have been shooting Thunderhead 100's in it and it does fine. Just becareful when it is cold outside. I was practicing just last Sunday and
everything was fine until it started cooling off outside and I noticed the
arrows started getting harder to pull. Next thing I know, I pulled an
arrow and it had no broadhead or insert. I looked at the other arrow
I was using and the insert was starting to come out of it. I don't see any
way of getting the broadhead out of the target so I will have to quit
shooting at that dot.