I have a Privia PX130 and am thinking of upgrading to a Privia PX-870. I cannot find a PX-870 in any of the music stores where I live. I love the keyboard action of my PX-130. Can anyone tell me if the keyboard action is the same? I specifically referring to how the keys feel. I don't want to take a chance on there being a difference and ending up not liking the 870.