i prefer the normal over royal. the large spots really give it that cartoonish look, and most non-fishkeepers are really impressed with that. possibly you could find a gold or albino color variant, i have a gold ck and he really looks cool.
ummm they r both beautiful fish. i personally chose royals cause they are more expensive and more rare...but i dont mind...if u wana see an ALMOST fully grown royal then check this out...my 38'':