FYI - AWM2 is what is used in the Motif XS line. I own a Motif XS and you have to be joking if you think that sound engine needs to "die" - go and play one on a Logitech Z2300 system and spend more than 30 mins

The PSR S910 and Tyros 3 uses AWM1 and to be honest there is a massive difference in the clarity against the Tyros 2. (i have never used the Tyros 3 so i cant compare but the S910 is very far from sounding compressed.

And yes I have previously owned a Roland GW-8 and a Korg PA 800. the Roland didnt phase me but the Korg had a nice crisp sound compared to the Tyros 2 but had very outdated synth and pad voices. Most of the styles to me were outdated as well (reminded me alot like the Technics styles).

The S910 through a Logitech Z2300 sounds amazing. Its unfair to make assumptions of its quality if you have only heard it through small PC speakers / headphones or the on board speakers.

-Nick