I voted for cardinals just because there's no option 'both'. Indeed cardinals seem to be more vivid in colour, neons however are more exquisite in built. It is unfair that because of the longer red stripe cardinals should cost so much more than neons.
In this case I am lucky to live in a place where a cardinal on average costs about 2,5 dollars compared to 2 for a neon. Prices may differ from place to place but the ratio is about the same. It is still underestimation for neons, but people seem to prefer brighter objects
I would like to keep both varieties if I am able to establish suitable conditions and healthy schools.