Believe me I only wanted to buy a nomad as a last resort as I'm fully aware that they're rare and expensive. So I picked one up today, consolized it (added s-video and a proper audio jack), plugged it in....and....first let's take a look at the technical specs of the nomad
1: All nomads have a built in sony cxa1645 encoder, it's very easy to add s-video to this encoder (4 parts only) and in my opinion this encoder has a better s-video picture than the cxa1145 found in other models of the genesis
2: The nomad audio quality is the same as the good model 1 genesis systems. One instrument sounded a little quieter but the quality of the audio was identical.
Here's a screenshot comparison between my va6 model 1 genesis that I built a cxa1645 inside of compared to the s-video from my consolized nomad....
cxa1645 genesis model 1:
nomad with s-video from the built in cxa1645:
As you can see the rainbow effect is mostly gone. The rainbow issue was the only thing I wasn't able to fix on the model 1 genesis. Model 2 and 3 genesis systems have cruddy audio (and I think the model 2 also has this rainbow effect). So in my personal opinion the nomad is the best model of the genesis / megadrive ever built. With some modding you can turn it into the ultimate home genesis. (Later I'll add a region switch so I can play my imports).
The non portablizer! Specializing in....Video quality?