Another thing is do you think it is anyway possible to modify the keys some way to have a bigger fulcrum? This is sure much more difficult I suppose. Is it possible to modify it to put the fabric instead of the rubber, your opinion? My guess is that it is not that impossible. The second issue is a noise because of the rubber material. Because of the rubber the first problem with them is that the key jumps back especially noticeable when playing extreme pianissimo, which leads to more control from me (and sometimes a doubles happens), and which absolutely does not occur with a real piano. Sorry, I don't know the correct name, but on a real grand it is a round fabric washers underneath the keys. I mean the, let's call them, the key bottom stoppers made from rubber. Hi Chris! How is it going with your PX5S? I was curious, since you are a piano tuner, if I'm not mistaken, did you have a look inside it? I found some minor problem with my PX-150 keyboard which annoys me a bit. And I'm not saying Casios are ideal - if they hire me or just ask - I sure know what to improve. Privia mechanics has more of that kind of cool "real thing" under your fingers feeling. To simplify I'd say any time and day that if you slightly on a budget and not so picky - go for Casio CDP-100/120, if you can afford - go for their Privia line (I will always choose the lowest model in the line-up because I don't want to overpay for the features I don't actually need). I saw several times how non-playing people choose Yamahas because they somehow like the sound without their own piano playing experience. Such labels as Yamaha, Roland, Korg seems to have more respectful appeal. I saw that lots of people subconsciously don't trust Casio that much maybe because of their watch or calculators manufacturer image. I was able to test quite a few more or less entry level keyboards from different manufacturers, though not saying all models and manufacturers but anyway for me Casio was always a clear winner, especially in terms of what you get per buck. I'd like to heavily recommend and promote Casio digital pianos.