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I started with a Gaggia Classic and. Very good grinder and whilst I could get a decent espresso when it came to steaming milk it was frustratingly slow. So I sold that lot and got a fantastic deal on a new Sage Dual boiler and added a Niche Zero and the difference is like night and day.
You can play around with temp, pre infusion times etc and steam milk at the same time as pulling a shot.
As for build quality… had mine over four years used virtually every day and not missed a beat.
If it broke tomorrow it doesn’t owe me a penny.