A:AnswerThe Puck Sucker is, indeed, only for 58 mm portafilters. The Express Impress uses a 54 mm portafilter, so the Puck Sucker cannot be used with it.
A:AnswerThe majority of the interior pumping of the Breville® BES876 Barista Express® Impress is not stainless steel. However, the portion that draws the water through the heating area is stainless steel
A:AnswerNo it does not. Its metal and the milk seems to stick to it and have to be scrubbed after each use. If you use it 4 to 5 times without cleaning you will taste the burnt milk in your coffee.
A:AnswerYou can't adjust for different types of milk with the BES876 Barista Express Impress. That is something that you can do with the BES881 Barista Touch Impress.
A:AnswerThere is no alert on my Breville Express. The water reservoir is clear, so I just look at the side of the machine at the reservoir and can quickly see where the water level is before I start making espresso. Unnecessary to remove the water reservoir to see the level provided you don't have something right next to the machine on both sides