Which is the best xenia?

[hermitkrab]

I have read that xenia coral are as good as and in some cases better than macro. Which type of xenia is best for this? I wanted to put it in my soon to been refugium. Also what lighting will xenia require in a refugium this size?...
Water Capacity: 4.70 Gallons
Dimensions: 25" L x 4.5" W x 12" T
Thanks!