It depends on what rifle you're attaching it to and how. Most of the newer bipods like Atlas are setup for Pic rail attachment, which is ideal if you have a Pic rail, like on most newer semiauto rifles. But not convenient for most bolt-action rifles or an M1A. The Harris is setup for a sling stud, which is not a great system mechanically, but does work, and is already installed on nearly all bolt-action rifles. You can of course get adapters to put a Harris on a Pic rail, or on MLOK rails, and you can put a Pic rail on a bolt-action or M1A stock, but it's more money and less convenient.

The Harris is an ancient design that looks just like a product of its time, but it works and works quite well.

I have two of the GG&G bipods in use. They are pretty good, but if I did it over I might try another brand. I also have several Harris bipods. I use the GG&G on rifles with quadrails, and the Harris on everything else.