@avrame, the one you linked on Amazon looks nice though. It has S-Video input, which my current one does not. So that would, in fact be a step up from the one I have if I can nab the Cube S-Video cables.
The one plus about my current model is that it does not need it's own power source. It sucks power out of the Cube itself, which is nice. But still, I'm (mostly) happy with my VGA box, so perhaps yr correct that the best step-up solution for me would just to get a better one than the one I have.