Expensive, proprietary "T-Discs" no option for using your own. Very hard to clean. Some of the t-discs "explode" and create a nasty, even dangerous mess. The hot-chocolate and "latte" options are disappointing. (and messy)
I really am sorry I bought this. I banished it to my workshop, where I will use it until I run out of t-discs then will probably give it away. I replaced it in the house with a Keurig, which is HUGELY better for this kind of machine! It's hard to fill out the commentary with enough words, since I just can't find anything good to say about it other than that it makes decent coffee. I much prefer something with enough flexibility to accept my own coffee, as does the Keurig version. These coffee-makers can save you a good deal of money spent on coffee if you are just making coffee for a single person. Even with my little four-cup "Krupps" I was throwing out a lot of leftover coffee. I understand from a friend who owns the Bosch version that it presents the same issues of expensive t-discs and cleaning.
I own or have owned almost every coffee-brewer out there.