With my kln89b having lost 2 (seperated) lines of the display, I'm in hopes that someone will have something to offer for us experimental type (or otherwise) in a lower cost arena. I spoke with a chap at aircraft spruce and the ksn770 may be a good choice, as they may (have yet to hear) to the 89B back for somewhat of a trade-in for their newer unit. I still can't go the 10K bench mark. Maybe one day someone will off something for 5K. Anyway, thought I share that trade-in info with ya's. Thx, DM