I think that the 498T sounds a bit 'thin' compared to the CS. However I suspect that the RY could be thinner again. It really needs a guitar with a lot of inherent bass. I think you are right though that the 498T has more rasp than the CS, but the CS has more edge, cut, and bottom than the 498T. I don't think there is much difference between the 498T and CS in terms of output though, whereas the A-Bomb seems to be a definite output increase.