I have one of the smaller, single-"bell" units and like the tone it produces, clear, ringing, with LOTS of resonances; this two-"bell" unit is much more complex in the tone(s) it produces. When both "bells" are struck, I can "feel the beats" between the tones generated, which are slightly offset. The resulting mixed sound is extremely complex compared to the single unit, and has an "Oriental" overcast to the tones as they mix. If you're a "pure western music" "trained ear", you might find this a little unsettling at first, since there doesn't seem to me to be a "normal diatonic" relationship between the primary tones, but rather an "Oriental" relationship. If you're looking for an "Oriental-ish" sound, this little unit should be considered.
Rating: [4 of 5 Stars!]