I'm curious if anyone has played with some of the other sound profiles out there for Digitrax and whether some of those files improve the sound to the point that it's approaching the quality of Tsunami et al? I realize the default sounds leave something to be desired, but once you've put in good custom sound set, does it improve sufficiently? I'd think that if you have a largish fleet, using the Digitrax decoders would still be cheaper even with the interface to load sounds.