The P70 is not a portable keyboard.It is a digital piano.
The DGX is a portable keyboard....it is basically a PSR with 88 keys.It is the first with weighted keys.

Do you think you will ever find what you're looking for?

Ian
_________________________
Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.