Something like this one?
http://cgi.ebay.com/LEADER-LCG-396-N...item588c907601
Looks like it has all the correct patterns, and is a bit cheaper than some of the other options. Don't want to comprimise usefulness by being too cheap though.
Once I have my Zenith in perfect shape, I would eventually like to get a tube console for upstairs, and tune it up to perfect operating condition. Would be nice to see a larger screen Zenith chromacolor. The RCA in your chroma alignment video looks like another excellent option. I want to be very careful about getting a console, because I tend to hold on to things forever, and whatever console I buy will be the one I intend to keep going until it's impossible, so it's got to be something capable of high enough performance I won't feel bad about continuing to invest time and money long past its real value.