considering jumping to MODX but I had issues with several yamaha keyboards in the past. One thing i noticed is that graded hammer action is not the same on all their keyboards. DGX, Mox, Moxf, Modx, p115 all use GH action, i have played them all, and they all differ considerably. one main GH keybed problem is dead keys popping up in winter seasons. just a little chill in the air, and those sensors beneath the keys start acting up.