personally i like the NAP Scorpion XP's. yes i know, expandables, but before i got these as a xmas gift i didnt like mechanical blades. i was very weary about them. then i did some testing of my own with these blades and i now believe they are very good. they fly very true. i only got one doe last year with them, but had i taken my time on other shots i woulda had about three more