? with acropora species

[sfboarders]

I'm a newbie with SPS and have some montipora but would like to add some acropora.

I've noticed that acroporas look different. Wondering if you can tell me which species:

- look like a table
- look more like a bush
- look like a pointy cactus

EDIT: Found the answer here. Didn't realize there were so many other types of other shapes.