Roland uses simplified chording for home use and beginners. There's nothing "intelligent" about Roland's system...it's made for those without the intelligence (or skill) to play full chords such as a rank beginner or non-keyboardist.

The G-70 is a home keyboard designed for players who want to use their own speaker system...it's that simple...Tyros4 is designed for the same purpose (although they do offer a bespoke speaker system) and so is Korg PA-3X.

Lots of pros gigging with "plastic" keyboards as well..you see guys, that's why they make road cases. People gig with delicate violins and acoustic guitars and lots of other fragile instruments...ALL instruments require extra care when used out gigging.

Donny gigged for quite some time with a plastic fantastic S910, and it didn't break; Gary Diamond has been using a PSR-3000 since I can remember, and no issues with the case or anything else. Scott Yee has done hundreds of gigs with his Tyros2 and Tyros4...no problems.

Let's face it...you drop any electronic instrument on a hard floor, and you are going to do damage, especially internal. I don't believe arrangers were meant to be tossed in the back of a van without a case.

A Tyros (or PA-500) in a road case is every bit as secure as a metal bodied instrument...no keyboardist in his right mind would gig without a road case, or at the very least, a good gig bag.

Ian

PS...Donny, I can assure you there is no wasted real estate on (or inside) the Tyros4...it's packed inside, so all space is well used and needed.