I have a psr3000, and a pa50. Funny thing-neither board satisfies me completely, but the two of them together do. It's like I have all the bases covered. I would think if you are using the keyboard for performing out-save for the 3000, if youe are not performing out any only want to spend 800-900 get the pa50 instead. I would think that if you got the 1500, and down the road was able to get a few more $ you would be kicking youreslf. BTY-I only paid $1325 for my psr3000 so 400 extra bucks is no big deal.