i've been shooting spitfires for awhile and want to get back to fixed blades. i shot thunderheads for years then tried slick tricks. now i want to true flying fixed head. main reason i went with the spitfires was the accuracy. if the broadhead doesn't fly accurate, consistant and true its just no good. so, who has shot the sik f4 heads and how well did the fly? i'm shooting a bowtec allegiance at #62 with 27.5" dl. IM NOT MERRIED to any one head, could be a hybrid that's the best.