The Korg Krome should have a nice GM set.
You could always send MIDI to it ..

Page 7 of manual lists them.
http://i.korg.com/uploads/Support/USA_KROME_VNL_EFGSJ1.pdf

I'm often surprised people think they need a GM VSTi when they have hardware ones.
Sure 'rendering' is easier, but the sound quality and control is often better from a hardware synth.
Convenience vs. Quality is always an individual choice and varies by user.

I'm pretty sure the TTS-1 uses an older Roland SC sound set at its base, so newer *anything with a GM sound set will at least challenge it and likely sound better for a lot of the sounds.


I do not work here, but the benefits are still awesome
Make your sound your own!