Well, I have a few pics that I think are some of the prettiest. Since you like H. magnifica, here is one that I got at about 6" across. I sold it at about 14". It had a nasty habit of finding its way into powerheads(no matter how much I tried to protect them) and kill all the non-clownfish in my tank. After the second time, and after it completely recovered, I sold it.
When it was small, then just before I sold it.
This is my BTA. The clowns are akindynos. The color on this anemone varies from day to day depending on its mood and expansion. The tentacles can be pink or orange. The tips are always yellow. I have had it for about 6 years and it has never split, and I am not brave enough to cut it.
This is a gigantea carpet that you had to look close to appreciate it. The outer tentacle tips were purple. The inner tips were teal. I had this one for about a year and a half. I don't remember if I blamed this one's death on bad silversides, or chemical warfare with a H. crispa. I had two between 1.5 - 2 years.(The other was all purple)
I saved the most unique for last. I have never seen anything like it or even heard about anything like it. It was only about 2-3 inches across. When I bought it I thought it was just a purple gigantea. In a couple days after it relaxed a bit, I realized that it was a haddoni that had bright green tentacles with purple tips. A couple days after this pic was taken it disappeared never to be seen again. You can bet I pretty much torn the tank apart looking for it, but it was all for naught.