Going through a list of SNES games now, I have played about half the amount of games compared to N64 but still heaps of good tracks to cover, already sure that my number 1 will come from one of the DKC games
As with the N64 list you did a lot is just down to nostalgia. For me anything from Chrono Trigger is high on my list but particularly To Far Away Times being my favourite song from any SNES game as it means a lot to me.