The only video converter I have used is the GBS8200 since it supports 24khz (medium resolution) as well as 15khz (Standard resolution). Which for games like Virtua Fighter 1-3(tb), Fighting Vipers and Dynamite Cop it was needed.
Most people prefer to go with the Jrok, but some people report better results with the Neobitz: http://www.jasenscustoms.com/NEOBITZ-Component-S-Video-Composite-Video-Encoder_p_52.html YMMV. I've only used a Jrok and it's been fine for most user cases (it notably has problems with 90's Midway titles due to the refresh rate).
