Just look them up Diki...you're a smart guy and I know you'll figure it out, my friend.

I'll help a bit.

Here's your fav, the NP-30's review in Keyboard:

http://www.keyboardmag.com/article/yamaha-np-30/nov-08/89525

Here is the CP-300:

http://www.keyboardmag.com/article/yamaha-np-30/nov-08/89525

I haven't found much yet on the P85 (you could try Harmony Central), and as Kingy says, the piano is not up to CP-300's standards, but I really love the sound, especially considering the price and the weight...it has a great feel and terrific response.

Nothing fishy going on...just a great choice of digital pianos to suit every taste and budget.

From my piano player's perspective, the Yamaha CP-300 is the best digital piano I've ever played...smokes everything Roland or Korg makes, and actually feels like you're playing a "real" piano...the speakers go a long way in creating this effect.

If I wasn't gigging, I would have kept the CP-300, but it is a little too heavy for me; you may not find it too bad, considering you don't mind lugging around a 60 lb(in the case) arranger.

Making "portable" instruments as heavy as the G70 and CP-300 is a flagrant violation of The Geneva Convention.

For now, the p-85 is perfect for my needs.

Ian