i've used them for two years now and have no complaints. however, my buddy switched last year (on my suggestion) and found that with his equip. they whistled slightly in flight. figure that one out! He uses the same GT arrows 30 in (mine are 29) and shoots about 290 fps with his hoyt. Just something to be aware of. BUT I'LL NOT BESWITCHINGANYTIME SOONjust for the record.