Jim,
Check this unit out. I have been using one for seven years as a home unit. It has every feature you'll need, including six mike inputs.
click here
George
I might add that there are six mike inputs, three in front, and three in back is why you only see three in the photo. Also, the ones in front and back are "paired" up where the individual volume controls are concerned. There are only three individual mike volume controls that control two mikes each, in addition to the master mike volume control. Thats the only place where the manufacturer's specs fall short, as far as I can tell.