I was getting some bad vertical lines on the simpler circuit. I went with the more complex one. Used 75Ω for chroma and 33Ω for luma.

Here's the David Howland version.

And here's the Jamma-Nation-x version

I'm sure others might have gotten a better performance out of it than I did, but I was happy with the Howland circuit.

I noticed the link is dead. So, here is that circuit I used. Just remember to use 75Ω on the chroma output. using a 33Ω will cause bad bleeding.

Anyone try these two out?

http://www.jamma-nation-x.com/jammax/genesismods.html

http://www.davidhowland.com/mod/#svideo

Any opinions as to which is better?