Indeed, there is a difference in the distribution, quantity, and quality in the extraction holes. The mentioned model is the IMS B62.52TH28E. It holds more than 20g of coffee, so it fits the logic of 2 to 3 doses. It is compatible with the 54mm portafilter of the Bambino Plus, but you definitely need to loosen the internal wire in the portafilter a bit, as the thickness will make it difficult for you to attach and detach the basket.