I have the Ohio Steel brand of ramps that are two individual ramps that hinge in the middle. I love them. They are long which can be a big benifit to those with taller trucks (try some shorter ramps before you buy them). I chose the aluminum 1500lbs. and have been very happy. Ohio Steel can be purchased through Cabelas & JC Whitney, but my best price with shipping was Northern Tool.
i bought a sort pair little steep but i always make sure to hook th cable or chain to the truck so they won't slip been their done that and it hurts but they are wide and i got them at bass pro for 69$$