i shot a bow that had the TR dropzone on it and i liked it alot. i think i like it better than my nap dropaway.as for the single pin sight i shoot a copper john on one bow and a trophy ridge matrix on my other. Personally, i am a little skeptical about the whisker biscut because the way it surrounds the whole arrow. i know that that is their selling point,but it worries me what would happen in bad weather. that is only my opinion though.i have never shot a bow equiped with a biscut and i dont know any body around here that does.