Hi John,
I agree to a point, some of these expensive machines are indeed better and have helped to improve the quality of espresso coffee.
It seems like every few minutes, the name of a new barista champion is announced and this too has increased interest in our industry and the required skills set. Both good things.
There are several hundred espresso coffee machine manufacturers now and most make several different models. Many include a top of the range model that can include a variety of different features to help get the best from your chosen coffee. I disagree entirely with your statement "there is a stark difference between machines over/under $14K". Yes there are good machines above that price range and a few that rely on their name/heritage too.
I am fortunate in that I get the opportunity to try many different machines and visit a lot of manufacturers to discuss their products, design, features, quality etc. I would thoroughly recommend that you do the same given a chance. You are correct, a huge amount of thought and testing can go into the size of the pipes, boiler, thermal reserve, jets, manual/electronic pre-infusion, thermal current, temperature control etc etc. There is quite a debate over boiler materials at present. I'm told an EU directive has expressed concerns about copper and brass use in espresso machine boilers? One Spanish manufacturer is stating that very soon, all components that hold drinking water in these machines will need to be stainless steel to comply? Another, testing the water quality from a machine using nothing but stainless has found that water quality is also compromised by the stainless... The debate goes on.
During a recent visit to a factory near Milano I was shown a new model. It had everything you could hope for and some new features that I had not seen before on any machines... The time, money and effort spent in testing and trials alone were most impressive. They had obviously aimed this model to be a competitor to a very well known twin boiler machine, a design that they had also considered. For their machine, the twin boiler design was rejected as an alternative design with independent group heaters/cool water infusion was easier to control with a PID system and gave better, more stable results.
This machine is, in my opinion, fantastic. Will it ever compete with some of the well established models in the "Barista" world? I'm sure many will dismiss it without a second look...
Barista competitions? Sure they use a handful of machines (I am sure money has an input here) but recently I've seen quite a few alternative names being used? Maybe living in the UK, our close relationship with Europe means we see more variety in this respect?
We all know that the coffee, water, grinder, machine design and several other things are most effected by the person pressing the buttons.
I like change. I like the spike in interest that our barista culture has done much to promote. I like quality coffee.
I am also an engineer at heart. If a machine is better I might believe you but I want proof!