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I can live with it being single boiler - it doesn't take long after the steam switch has been flipped for it to get up to steam temperature.
My morning routine is make two espresso shots, top up one with hot water then turn on steam to do the milk for my flat white.
After much reading up it seems steaming would be improved as the default steam temperature is high (150ish, IIRC) and most people dial it down to 130-135 when they have a PID.
Working out the optimum temperature for a good shot and getting that dialled in is a big attraction too.
Would it help with steam though? The problem I have is getting the steam at the right temperature, so my morning flat white is very hit and miss. If a PID could make my steam temperature consistent (which this one can) presumably that would help?