A reciever would be nice, but keep in mind that a winch is heavy and would be a pain to pull of the front to put on the rear in the mud or uneven terain. If you could aford it, have one front and rear, if not then try the reciever.
Although it doesn't really look like it mine is essentially built into the bumper. There is no way to remove my winch without removing the bumper from the Jeep. To do that the thief better have at least one strong friend.