Funny you mention this, I've been notcing coffee grinds in my espresso as well. Some people tell me that is normal and honestly I don't really mind because to me, it doen't impact the taste. With that being said.. I am also a french press drinker and you do get a bit of "sludge" in that as well. Overall though, I have been to a number of different cafe's (decent ones) and I would say abut 75% of the espresso's are not nearly as good as Nespresso.