The cloth on the Beagle is too bright and happy. They need to use some dirty colors ... maybe make it darker. In fact, I think the whole armor is too clean and brightly colored. The bright whites could use a little light greys.
In terms of colors, I think Megahouse got it down. In terms or sculpt, Beagle is the winner. To me, a great sculpt is just as easily ruined with the wrong colors.