ive used both kinds, and they hold up just fine, i too was a bit bummed uot when i found out that it didnt have a castlenut, same with some brands of tie rods, which i wasnt excited about, but they still held up fine, personal preference is to use MOOG componenets, they not only come with castlenuts, but they give you every mounting bolt brand new, and high grade, very good parts, but then again-i bought a set of moog tierods and they flash rusted the first week i had them on (with the car parked inside!) and one of the didnt have the taper on the threads and i couldnt get it seat right, which made me have to return it, which made me pretty upset because i was ready to bolt em up and start cruising! be careful guys.