Your right they are not for everyone. The biggest problem that I had with the Magnus 100 head with the light carbon was tuning. I tried a few different Muzzy sizes before deciding on the 75 grain. I got a very nice tune with them. But mentally the setup was not 100% for me. This was the first and last year that I used the light carbons for hunting (I did get two deer with them last year). I may try the heavier carbons that are coming out in the future, but I won't go back to the super light ones for hunting anyway. I went back to my aluminums for this year. And you are very correct in that in order to shoot the heavier two bladed magnus, you need a very stable arrow. I use a 33" XX78 2613 with four helical 4.75" vanes. Feathers work even better, but they have their drawbacks.