I was listening to the Dungeon Explorer soundtrack while playing the game this morning and I can't stress enough how cool it is! Especially for a first generation title. Whoever composed that soundtrack should get a free ticket to heaven.
With that said I love music across all fields as well. The NES, PCE, SNES, and Genesis all have their standout tracks. Konami did a great job with their work on the NES with Life Force, Contra, and Castlevania. Sunsoft and Technosoft were masters of the Mega Drive FM chip. Do I need to explain why the PCE rules in this regard? As tinny as it can sound, it is still wows me! Capcom and Nintendo worked their asses off making music for their SNES games that sounded like they looked, like in Street Fighter II and Super Metroid.
However, I am surprised by the amount of love going around for the SMS. I just didn't expect it. But, I will say that the older I get the more I am endeared to it.