Quai34 wrote:And for Organ, nothing beats a waterfall keybed...
True, but other kinds fall short by different amounts, and even some waterfalls are better than others (Roland VR700 and VK8, and Numa Organ 2, are some waterfalls that I like better than Nord's). Non-waterfall semi-weighted and unweighted actions are closer to waterfall in organ suitability than hammer actions are. And then, within hammer actions, some (like Nord's HA models, Kawai MP7, some of the Kurzweils), while not as good as any of the above, are still noticeably better for organ than other hammer actions. The HP actions are close to the bottom. That said, if your organ playing does not employ much in terms of organ-specific techniques, you can sometimes still manage just fine on pretty much anything. "Light My Fire" plays perfectly fine on a hammer action board.