Hello Bev
Mandarin are quite hard to keep in captivity.They need plenty of living rock as this is where there main diet lives .ie; copepods and small crustations.They have been known to do well in a well mature system with as i say lots of LR.If you see one in your local fish store and you have the above make sure it's feeding on other foods(mysis,brine shrimp) as this will help too
Both types of mandarin will be the same type of care so it's down to personal choice.
If you have other greedy fish in your tank i would think twice or prepare to feed him/her in a little glass jar were they will fit in and feed but were other cannnot
If you need a picture of this as a example let me know and i will post one up on here
Ollie