Quick comparison video between 31KHz (VGA) and 15KHz (CGA).

The SEGA NAOMI is running at 31KHz (via XBOX360's VGA output) and the OKBaby is running at 15KHz (via MAMEOX, HDBoxPro, Super Emotia set at 240p). Both setup seems to be lag free. Both georgeous in my eyes (even moreso if I chain the SLG3000 between the 360 and the NAOMI).

Here is the vid: