pa 50 has triton classic board(less efx),and load triton programs,I don't think it'll be a major problem(as most midi/audio seq like logic,cubase or sonar will support triton map).and unless you are using psr for xg(in software seq)i can't see the better advantage of it(for software seq)(thought it's a better choice for it's versatility/ease of use in OMB situation).