So I picked up a huge lot of toasters to refurbish, de-lockout and resell but I started noticing differences in the video output housing... anyone have any experience regarding performance differences across the systems? Like any special serial numbers to look out for, updates on components or better parts etc.?

Im guessing this topic has been covered before so im fine with someone pointing me there. Tried looking but nothing quite answered the question exactly.

Thanks!!!

No one? lol. Im probably going to be selling off all the others so any help or pointing in the right direction would be great

Seems like your only option would be to dig up the NES Serial Number Registry thread and ask for help there.