Yeah, to change the Xp-30 with a Triton is not a really good way in my eyes, the xp30 is great, maybe you should sell the xp30 to buy the triton and a JV2080 rack! The good way of this is that you can use a sampler in the Triton, maybe that is what you miss a bit, but think about it, xp30 is just a great machine, really good natural sounds.. Studio Standard! Expansion Boards are cheaper as the ones from Korg and you can throw 4 Boards into it (or 2? hm..)..

Frank