I’m kind of in the same boat, looking to upgrade my Harris to something better that I can use with my centerfire and rimfire rifles.
A few years back I swapped the Harris swivel stud mount for the RRS Arca/pic clamp to be able to quickly remove The bipod during a stage when bipod wasn’t needed.
One of the first things I added to my rimfire rifle was the 14” Arcalock rail from Area 419. I also put a Arcalock rail on my centerfire, so both guns can share the same bipod.
If money is an issue, I’d rather stick with the cheaper Harris and put the money saved towards equipping my rifles with Arcalock rails because of the added versatility the rail brings to the different positions we shoot in (e.g. slide the bipod closer to the magwell for shooting off the top of a barrel) and the ability to attach a bag w/ Arca clamp to the rail for barricade shooting.
That said, the 3 bipods on my list are the Atlas CAL, Accu-Tac BR-4, or Grnd-pod (all with an Arca clamp). Problem right now is the Accu-Tac and Grnd-Pods are backordered.