Hello fellow Sierra Midi Fans. I rftl the .. am ... Midi Noob

have some questions about the Yahama Mu 80.
I'm use Midi Synth only for gaming and to listen to nice midi songs.
I know that a XG device it not really a must have for Gaming. Because there are almost no XG games.
And for GM it would only be nice because I already have a SC-55Mk2.
So it's mostly for music. How are the compatibility for the Mu 80?
Is there enough Free XG music on the net that Play nice with this device?
Or do i need a more advanced (and out of Price range) Synth for most XG Midis?
What do you guys think. Is the Mu 80 good Synth for only listening Music?
Yeah my English is really horrible.