I run two side by side and get little to no interference. The 998 is a powerful unit for si. get to know it well. supplement it with a bird di unit and you will be all set. those images i posted were the norm for me. if you want to network get 788. if not 597 or 587 will be just fine. dont need bigger as the wide screen only shows history on di and 2d. just the opposite for si. This is my opinion but you asked for it.