I use the schefflera abricola in all of my chameleon tanks. I have had great luck with them. They are very hearty, the only one I had a problem with was in a solid pot and was unable to drain. I am now using proper pots with some drainage and they grow great no problems. The leaves are big and offer alot of cover, and hold the water droplets well.
The only con would be they do drop their leaves when the leaves get older. If you put a big plant in the cage you will be cleaning leaves weekly. Not a big issue and I just clean them up with regular scheduled cleaning.
I would recommend them. Personally I like to buy a bigger bush and seperate it into 2 or 3 smaller ones, since you will likely be repotting anyways. No trouble with the plants or roots when splitting them so far.