It's prolly been posted before, but im new, please humor me. ok i got a question cuz ive never had to buy them, are all frame sliders alike, or is one brand better than another. Im looking at these because im placing an order from the site anyways. Anyone have any experience with any specific brands and have recommendations.

http://www.kneedraggers.com/details/...i--619377.html

Also should i invest in a set of bar sliders as well or are they not needed as much?