There basically the same except that the 210 has this feature where you can set all the speakers to the same level, sorry I don't know what it's called. The guy said that the AVR210 remote has a microphone in so it can set all the speakers at the same level, wheres the 110 you would have to do it buy hearing it yourself. Is this feature really usefull, does it make a big difference? Also the 210 has pre amp output, but I think it has enough power as is. So should I spend $100 more for those features?