some nice wooden frame (Australian wood of course!) with a glass panel to display the guts.Д¬lick to expand.It is the only 'real' espresso machine I have owned, so I can't give any good comparisons to other E61 machines. The other thought is more in your direction. Initially I might just go Bauhaus 'form follows function' and keep it an open skeleton. The predominant aesthetic for E61 machines is polished stainless. Or if I couldn't be bothered with a GUI (probably) add a lever to control flow or pressure. You could use this to provide real-time information on the shot (Like a DecentEspresso machine). Loop that to control the flow rate of the pump. add a pressure sensor and flow sensor near the end of the brew path. They are about as good as you can get for dual-boiler E61. If you havent already looked at the 700 or Synchronika, have a look. I would use Profitec 700 parts (or ECM Synchronika - they are effectively the same machine). I rather suspect the steam boiler will be similar. The E61 is just nicer kitchen bling - particularly to the uninformed.ДЇor the GS3 group I have calculated a materials cost slightly above 2K (Australian pesos). even if it is potentially 'inferior' (loaded term). There is some aesthetic beauty to the E61 group. I think I would have less creative freedom with the plumbing. The disadvantages are price, slow heat-up times (probably higher power bills) and. The main benefits are top-of-class temperature stability (saturated group) and daemonic steaming power. I am being pulled in the direction of a La Marzocco GS3 AV build.

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