Bipods are critical in your position build. Don't cheap up here. There are many bipods offerings from which to select other than Harris and Atlas. Purchase decisions are like hunting. At least for me, it's the hunt more so than the kill. While not for everyone, gathering info, talking with other shooters, comparing offerings is part of the sport,,,,,,,and, it is the cheapest segment of the sport....
Although the knowledge gathered can be very expensive as awareness of perceived need and offered solutions is the first step in making purchasing decisions........aka spending money....often boat loads of money. Without awareness of need and solutions, one doesn't spend hard earned money. Enter the Marketing/Advertising types.
Atlas are great, robust bipods, although 2-5x the cost of Harris. They have more slack (clearances, slop) in the legs that needs to be taken up in position build. The Harris with the spring has less slack. Both types have several versions, so study the specs to make your choice. For instance, the Atlas PRS model legs do not rotate resulting in less"walk" under loading and recoil, especially on slick concrete shooting benches. Atlas offers leg extensions maybe covering broader application range. There are many manufacturer OEM accessories as well as ex-OEM accessories on the market. More hunt!!! As an observation, on the new ASR (Advanced Sniper Rifle) Barrett MRAD MK22, USSOCOM chose the "lowly" Harris. They could have chosen any bipod in existence....or yet to be developed to their specs. Harris is a lot of bang for the buck. However, I gravitate toward getting what meets my anticipated application range with the best quality and robustness available. Buy once; cry once; happy ever after......until one sees a newer gadget. Thanks Marketing?Advertising types!!! Remember, bipods are quickly moved between shooting platforms, so the initial cost gets applied over many applications. Spend time understanding your maximum projected application range and the features each bipod offers. One is rarely disappointed in buying great gear. But, the sweetness of low cost soon sours from poor performance.