Just started using mechanicals this year so I can't speak about other brands, but I'm using the 100gr SpitFire. They fly just like field points and they don't have any rubber bands to break or slip off. Practicing I've had to start shooting every arrow at a different spot because even the little bit of blade that sticks out was cutting the fletchings of the other arrows. Havn't killed a deer yet this year but I did shot a running fox from a tree stand at 30 yards. All three blades expanded perfectly and on exit the blades completely gutted him......completely!! Very accurate and very leathal