I've seen the medusa in person, it's pretty sweet. It's not the hot pink that it is in the picture. What I saw was more of a burgundy color with yellow polyps and blue tips. I liked it, I just don't know if I would personally spend that much. If you have the cash to drop, I would be all over the yellow fever. It's as amazing in person as it is in the pictures. I can't be of much help on the other two.
It looks like the pic honestly, but the pinkish red isn't as vibrant as the stock picture from reef raft. But that might also be because my piece is still on the small side.