House Junkie- The Triton has a different sound to the Roland. If I had to choose between the Triton and the XP60 I would definetely go TRITON! However, don't get it without the MOSS board as I feel that this synthe is not complete without the awesome synthesis facilities that this board offers. Also budget for the new dance card that should already be out- I've heard good reports about it!
If you can afford it, I would hold on to the XP60 unless you really don't want it anymore. Or after saving up some more 'bickie's also get a JV2080 and stick your techno and hip hop cards into that. As you can see, I like both Korg and Roland sounds. They just compliment each other nicely.