I prefer frags, they seem to grow out in the tank better... adapting to flow and what not...
I have purchased a few colonies, but as said before in the thread... colonies now a days are like frags back then!!
When I think of a colony, I picture at least the size of my hand fully stretched out... Frags the size of say my pinky...
A mature colony in an aquarium on the other hand..2 hands stretched out, side by side!! :smile: