I bought this metalophone as a gift to my little kid and end up using it for some home recordings too. It has a good and clear sound, even without a resonance box. I mounted it on top of a wood box for extra sustain and loudness, and miked it with an SM-57 and the results were nice.
Positive - Great for the money! Ranging from C3 to G4, it is great to use as an introduction to this kind of instruments. It has a decent sound, with no "dead" keys, as sometimes it is the case with some entery level instruments. It comes in a cardboard box with just the right size (so it can be stored without the risk of the chimes pop out of place) and with a pair of beaters.
Negative - The "coloured box" announced is just a cardboard box... That can be misleanding.