It's a good starting point, that's for sure. As far as the cleaning side of things go, I don't have much to argue with, although our techniques differ a little due to the double-walled baskets you're using. The video was about a bit more than cleaning tho and I'm going to disagree with you somewhat on some of it. Double-wall baskets are great - IF you're using beans that aren't fresh or don't have a decent grinder. The EM6910 is a serious domestic machine, but it's aimed right at that uncertain spot between average home coffee lover and serious fanatic. The double-walled basket is really not great for creating a rich, full-bodied espresso. It is good for ensuring that you get a consistent result, even if it's not as good as it could be otherwise. And given that consistency was the point of the video, I can't take too much issue with that part. Maybe just the 'good' bit. 😉 And that blonding at the end looked a little extreme for my tastes. I'd be stopping the pour well before it got to that stage, but the spurty nature of it makes me think it's possibly the pressurised baskets at play. Cleaning the portafilter might be a little different for double-wall baskets too, I don't recall. My current routine has me washing out the PF with hot water after every use and I flush the group without the PF in at the same time. Without a pressurised basket I don't get grind or oil retention between the walls and the hot water tends to wash away most of the oils. Instead I do a nightly backflush with a blind filter - not sure if that's possible or recommended on a 6910. It certainly wouldn't be for most machines without an OPV.
