Akira, It's a difficult choice but I also think I like the first better. When I photograph flowers (insufficiently, given how much I enjoy the photos that come up here) it often seems important to focus on one of the closer anthers (as Mikes mentioned). Photos where I missed focus or focused elsewhere, tend to produce a similar response to portraits with an eye out-of-focus. I don't know anything about the underlying psychology, but find the parallel quite interesting.
Anyway, the point of this rumination is actually to say this is not so for the first photo. The small in-focus islands are nicely placed and hold my eye, and the lens does a great job with the tonal gradations around them. Brightening the central region a bit might enhance the contrast between yellow and pink. Just a thought.
Cheers, John