xanthina or hugonis?

I am thinking of getting a seed or plant of at least one of these (unless I can find someone with cuttings). I’m not sure I want to fit both as I believe they are large, and I was wondering which was the richer, deeper yellow. Is there anything else about the two of these that might recommend one over the other?

Thanks,

Chris Mauchline

Hugonis seems to be a slightly deeper yellow than xanthina, but there isn’t much difference between my two plants.