Just got my 125 vents in yesterday - very high quality broadheads - very impressed!
Initial impressions - highest quality head I have used for sure - they are flying pretty much identical to FPs out to 60 (as far as I shoot in my yard)... I will keep playing with them over the next month as I prep for sept, but I am not thinking I will have to adjust my tune.
Out of the box they are hair shaving sharp - I am a knife nut, and this is a huge pet peeve for me - I shouldn't need to sharpen a head once I get it. They are easy to strop as well - so after 10-20 shots into an 18 in 1, about 2 mins on a strop and the are hair popping sharp again - very nice.
Durability seems good - have not missed a target (knock on wood lol) but edge retention has been very good so far - incidentally A2 is one of my favorite knife steels so stropping etc feels "familiar" with this steel.
They are very accurate, however, like any broadhead, they will point out issues with form, release etc - this is to be expected.
As any broadhead, they are more then doubly impacted by crosswind (compared to a FP) I imagine the vents help tho... in 10-15mph getting maybe 6" of drift at 60 yards.
The are a little loud - not quite as loud as a montec - not a deal-breaker, but it's there - I can't conclusively say it because I don't have solids, but if the vents cut down on drift by 25-50% I say the extra noise is worth it.
All in all superb heads and I very much like them!