dfk41 Having owned a LM GS3 auto, I would say they are a complete waste of money. The current paddle version is around 7k, and for what? To guess at what is happening by moving a paddle.
I wouldn’t disagree but the Lineas are different machines, newer and much cheaper. Manual profiling is a bit of a guessing game regardless of machine.
I agree Marzocco’s are overpriced but again, having owned various E61 machines the group type in the Linea machines have vastly better temperature stability which does affect taste.
So hopefully at some point we’ll see the same group types pop up in more affordable machines. As I understand it it’s not particularly high-tech not super expensive to produce.