I finally jumped into it, actually not here, but in the MRH thread, especially since my stuff got here today and I am officially now an RP user. Y'all realize this is almost a religious war, right? Both sides don't just know, they believe they are right. The DCC crowd is so sure that they've closed their minds to anything remotely close to an alternative. Sadly, this makes them about average, as people go. I always explained them to my employees as the "we all know anything new or different won't work" crowd. The RP group evidently took off the blinders. I had to do the research for myself, running into the same roadblocks you've already seen/heard.
The DCC communication is actually a radio, as best I can decipher, using rails/busses as antenna. A constant DC carrier with a 1mhz square wave signal piggybacked in it. I guess it works, for 1970 technology, but the radios back then had crystals too. This is the same reason those users have to continuously clean track, to keep the static down. Sadly, today's radios don't transmit or receive without an antenna either, which says it's faulty technology.
I did the cost math. RP was not the cheapest for my system, which is evidently fairly large (20'x30'), but it wasn't the most expensive either, keeping in mind I also bought extra remotes. I figured the prices with and without "decoders", which the DCC stuff is actually higher for the better ones. And, I only figured the higher end stuff for the DCC systems, at least the ones most people were claiming as "better".
Today, though, pulling the decoders out of two Athearn SD70Ms, plugging in LM-3Ss and being up and running was just amazing. I had ran those engines as straight DC and I swear they are quieter and smoother now. That kind of defies Alan's question but, I got them as DCC-no sound for the same price as DCC ready. Besides, these are special. "Spirit of Mulberry" and "Spirit of Tampa". Hey, this is phosphate country.
Something has to go wrong. It can't be this simple.
Enough of this. I've got to re-read Alan's thread about speakers. I've got trains to run.
PatP