I feel sheepish for asking ....but
The SitePro looks like an alternative badge Trimax:
As Mr Harris says, go for the dual clamp. And go for the interleg straps to stop the legs slipping out on slippery floors. In the above setup on concrete, the leg points are in drillholes (note also the twin Yoko's, one holding down the umbrella tripod).
In my experiences...everything I have ever bought made by SitePro has been complete garbage. This brand is a Chinese knock off that uses very cheap components. For what it is worth...I flat out refuse to purchase any gear that SitePro makes. Saving a few dollars is simply not worth lugging around equipment that will fail and not provide the results and reliability professional surveyors need.
You might want to check out Dutch Hill tripods. I started using them some 25 yrs. ago, and wouldn't bother trying out another type if I needed to replace or add to my collection. They use a single SS band with an adjustable plastic toggle for clamping, and I've never had an issue with them. My older one has an aluminum head shaped similar to a tribrach base and the other newer one has a round head the same size as you describe. Both work fine with my Leica tribrach (or any other) as they all seem to be interchangeable. I believe both are the GT-2000 series.
Ya gotta ask. That’s why we’re all here. 😏 🐑