I have a DOLPHIN (Borden action) and the EXTREME (Rem700 action). The Ex is a copy of the Dolphin BUT the grip on the Dolphin is larger, rubber texture and fits my hand a lot better. (I ended up making a larger grip for the Ex, it is quite small). Also the cheekpiece on the Ex is set too far to the rear, you really have to crank your neck for the sights. Both stocks are nice but if you have the option get the Dolphin. The mods for the grip and cheekpiece are not difficult, just letting you know.