There's not a lot that can be said about Cooking Mama 2. It's Cooking Mama, either you like it or you don't and every game is like the others. I have finished all of the modes, and I had a bunch of fun so I went out and bought the third one. I didn't get all golds, I've left that as a nebulous future mastery medal if I so desire.
Also, is it just me or is the microphone on the 3DS really badly positioned? It's below the start button, under the edge, which makes it nigh impossible to blow into and see the screen at the same time. Which makes some recipes extremely difficult to gold as you need to blow and do something on the screen at the same time sometimes. But I haven't seen anyone else complain so maybe it is just me. 4/5 stars.