Re: Which color you prefer?
I like the first. The second is terrible. To avoid visual bias, I dragged one off the edge of the screen, closed my eyes for roughly 10 seconds, then looked at the image. The purpose was that I wanted to see what I would think of the white shirts. They're too bright and a bad wardrobe choice. With that in mind, the second tends to go a little magenta / reddish in appearance in the folds of the shirt, and it's just very unpleasant. It shouldn't even be a consideration.
Now look at the photo you referenced. Skintones are warm, and they're much deeper. The people in it are Caucasian and a bit tan. Asians typically have a slightly deeper skintone without being really tan, so if you're going for that look, you made them way too bright. Look at the clothing. It's not overly bright. Now look at the background. The background in that image is a bit on the cooler side. It makes them appear to be warmer due to the juxtaposition.
On yours I like the emotion. I think the setup probably had potential. Everything else needs a complete overhaul. Ah I didn't realize the original post was so long ago. Blah. I never came across it.