Now if I recall correctly, all of the "High Definition Graphics" Genesis' have the Yamaha YM chip, and should sound good, whether it's TMSS or not.

I know mine is TMSS and it has the Yamaha YM chip and the Sony CX chip as well.

I think you are basically safe buying any "HD Graphics" consoles.

About the red text, that is odd. I've never seen a USA version with red text.