my experience with them is positive but I use the big 160 snuffers with 100gr adaptors on heritage 90's from a 48@28 Baraga that I only draw to 27" so should be around 45#, these shafts bare shaft perfect so the flight is dead on!
they blow right thru deer from my stands when only hitting ribs but I'm only about 10' off the ground,,, got my big doe last season shooting straight down and going away I hit her next to the spine above the liver angling forward and that snuffer was sticking out the bottom of her chest between her shoulders and bumping along the ground as she ran,, I know it would of passed completely thru but it hit the ground..
my snuffs are very sharp I spend a lot of time on each one and then use ceramics to polish the edge's,,, the tip is filed down for strength which I highly recommend..... I will be using them this year out of a few bows and using the 125's with my 46# selfbow.