In all honesty I have yet to hear anything advantageous about ResoTubes. I firmly believe it's a case of 'The King's New Clothes'.
Back in 1963, Jim Burns had to be seen to not to be copying Fender and that's about it. My new £249 Burns SSJ sounds equally as good as my Marvin and it has what we would describe as a generic tremolo system, though it is a thick block rather than the budget type, but again I have a couple of those and the guitars sound great.