Have used this machine for 4 months, good or bad coffee it made depends on my luck – I bought BES920 half year ago, I still can remember how exiting when I bring it out from the box. When I made the first cup coffee by using 5 sences beans, I was a bit confused with the volume of coffee came out from the machine, as it was so little volume, much less than I saw from the coffee shops elsewhere. Then I watched a lot Youtube video, others can all easily make right volume coffee by using the default setting, grind number 12 and 9.8second. Then I thought maybe the bean I used was different from the one they are using, I change the grind number to 14 and 16, the volume of coffee is more then number 12, and looks right. Then I started buying different good coffee beans around Melbourne, Seven Seed, Sensory Lab, Proud Mary, etc. But every time when I change the bean, the volume from the machine is different. I have to try a few times to get the right volume coffee, it start to annoying me. Sometimes even the same brand coffee bean, the volume from the machine is different, and I had to pressed the 1 cup button again to get the right volume coffee, but the taste of coffee definitely getting worse. That's what I mean, good or bad coffee, depends on my luck. Today I changed a new bean, with grind size 18, after running 30 seconds, it only came out a few drops, even I pressed 1 cup button again, no difference, and the coffee powder in the portafilter was still dry after running 2 times. Then I ask my neighbour who is a coffee machine mechanic came to my place, he let the machine run without basket and portafilter, and he found the free water flow is less then the other coffee machines that he saw before, then he use a measure cup to measure, for 10 seconds since he pressed the button, only 50ml water came out from the machine, he said normally it should be 100ml-150ml free water flow come out to get the right volume coffee. Last we tried to use grind size 24 for only 7.4 second, then we get the right volume. Obviously, size 24 by 7.4 seconds is far away from what it supposed to. I love coffee so much and always looking for good coffee beans from Melbourne, but I found my coffee machine ruined the beans I bought and doesn't worth the money I paid for.