Thanks for the reply.
It's a Dance Dance Revolution. Output is 15khz and has a VGA type connector (Not VGA signal though

I have two of these machines, so I was looking for a good combination of best vs cheapest for the second machine

Is there something in-between those two options? (Converting from this to S-Video). Maybe with a single scaling?
Side note:I don't want to use an LCD/Plasma screen, the lag makes the game hard to play. So I was thinking an NTSC CRT TV with S-Video input would be the best? (Ruling out an arcade monitor too due to cost)