I' m so old school it' s sickening. I can' t seem to give up the Muzzy' s. They shoot like my field points. I am curious though. I am still a bit jaded because of all the bad publicity the early mechanicals got. I can' t bring myself to try them even though almost all reports on them are good. The one alaming post I found was by PatapscoMike when he mentioned a lack of pass thru' s on a couple deer. I absolutely require that second hole in the deer. Usually a tough tracking job with only one hole. Have any of you experienced the same problem? I went as far as to buy some spitfires a couple years ago, then chickened out when push came to shove. Do you all prefer the two blade or three blade design? Jim