I quite liked my Tassimo. One of the good things about it is that the pods have barcodes on them which tell the machine the temperature, volume and pressure to use for that pod - which means you get very consistent coffees from it.
The BIG disadvantage that I found is they really don't like limescale! Mine got crudded up, leaked water from inside then started tripping circuit breakers. Googling suggests this is a common problem with them. We're not even in a particularly hard water area.
I now have a Dolce Gusto machine, which takes huge pods and is more "manual", but produces a fairly decent coffee (despite being made by Nescafe), seems to cope with our water, and most importantly goes with our kitchen decor.