Thanks for the clarification onthedials.
That was the best-written technical post on the subject in this thread that I've read so far. I was hoping to differentiate the RADAR vs. ADS-B debate from the GBAS vs GRAS vs WAAS vs everything-else-that-was-being-thrown-into-the-thread debate.
I oversimplified the GPS/Transponder aspect of it and I apologize for doing so.