I use a set of acaia lunar scales. They are compact in size and suit my method.
My method is
1. Weigh the grind into a small cup and then the pour cup into portafilter
- I do this because the lunar is small and my portafilter doesnít quickly and easily sit on the lunar.
2. Make the coffee and weigh the fluid output in the cup.
The acaia has a bunch of other features that I just donít use at all, ever.
I bought some cheap eBay jewellery ones initially but they were terrible.
So I think you have the right approach to it, itís just the fun bit of deciding which one you want.