Don't get me wrong, GPDwin is pretty good too, but controls on the Pandora(beside the nubs...) are top notch, only the shoulder buttons are slightly worst, but the gpd win is even worst when it comes to shoulder buttons. Battery is ok, but Pandora gets twice as long on a charge. Then you get the glossy screen vs mate of the Pandora... And if you don't plan to only do retro emulation, the GPDwin is a better choice.
Eh, I like the Win's shoulders better than Pandora. They're wobbly, sure, but they're responsive and they are easier to press than the Pandora's. They also feel better.