Here's the one I use: https://www.amazon.com/gp/product/B07XH1C5CV

It's plenty fast. Typically if I'm stopping a shot at 36g, I stop once the screen says 34g and then it lands right where I want. The Acaia is only the tiniest bit faster, but not enough to justify it's $200+ price tag (unless you need the smart features). I originally purchased this for my Robot (which it fits perfectly under), but I liked it so much I started using it on my Profitec 600 as well.