No doubt the BH55 is a super ball head and should give you several decades of great service. That said, the cost is around $500. For the past year I've been running the Leofoto LH-55, which in my opinion, is a direct chicom knockoff of the Really Right Stuff BH-55.
I was told of the LH55 from a photographer's website, where the BH55 was the mainstay but for the last couple years the beginners were going with the LH55 due to price with no downside to it, as it's every-bit as solid as the BH55. I purchased the LH55 from B&H Photo. Now to be fair, I purchased this prior to the chicom virus, as I now try not to purchase anything from china, so that could be a consideration to consider spending more on the BH55.
I've used the Leofoto LH-55 for maybe 160 hours this summer in the prairie dog towns with the Slik Pro 700 DX tripod legs and I couldn't be happier. This is my first time using a ball head, so I took the experiences of photographers with big arse photo lens in making my decision. Took me an hour or so to get the "feel" to use it properly while moving my AR up and down and side to side, while sitting in a chair.
I found it to be as stable as a solid bench relative to accurate shooting, as my groups on paper in the field using the tripod setup prior to sitting up in the prairie dog towns were the same MOA & POI as when shooting from a bench at the indoor range (100 yards). I don't think you can ask for more than that from a tripod mount.