Instruct: Classify Amazon reviews into positive or negative sentiment
Query: RS130 vs RS120

We have a RS130 that we bought couple years back and love it, we bought this down grade version RS120 for other TV room thinking it should work the same for $ 30 less..we were wrong...The headphone was not as comfortable as the RS130, the size or curve can not be adjusted the way RS130 works, it kept falling off our head. The volume & tuner bottoms are "wheel turning type", you can easyly loose your frequency if you just scratch your ear or simply by turning your head, and to tune back to the right frequency is a big challege, the stalics is constant, the volume is not consistant, one side is so much louder than the other one (they are design like this, but this one is way off the scale), The charges works just like the RS130. Only thing I like is saving you $30 buck, but I can not get though the tuner button( RS130 is push button), so we return it the next day and got ourself another RS130.