Really the only difference between the two is that the 17P comes in a charcoal color and the 19P comes in a slate blue color correct? Not worth the extra cash really, it looks nice on my TX790P but not worth forking out any extra money.

The TXN19P only comes in slate blue whereas the other models can also come in platinum and the one with the red cover right?

Is there any differences I do not know about?