The PLX is really nice with its serial bus etc making wiring really easy but there was one thing about it that turned me off and that is there is no RS232 output for data logging. I've got my own applications that use its output combined with consult and that is what I use for tuning. It also has an analog output that is switchable between 0-5V linear wideband output and 0-1V narrowband output. The one thing I didn't want to have to do is build an A to D circuit just for my wideband... that's silly seeing as it alread has that inside the controller.