I'm interested in this subject too... also wondering, if the ethernet connection is the only way to recieve firmware updates to this unit, or does the RS232 connection do the job? If it does, then the 1800 may really be the better bang for the buck... curious because I'm on the verge of purchasing one of these two model!
PS. Posted a similar question over at audioholics.com forum 'cause I know there are a lot of Yammie guys over there. http://forums.audioholics.com/forums...119#post401119