I'm looking for a good set of solid roller lifters for a BBC on a budget. I've found the average price to be about 260.00 through Jegs and Summit Catalogs for Comp, Crane and Lunati brands. Has anyone used the Chet Herbert name brand? They are going for about 180.00. Are there any advantages to using the vertical bar as opposed to the horizontal bar lifter? I've heard that the spring loaded rollers have a tendency to break. Any info is greatly appreciated.