I would say go to USfine. I have ordered items from them and they are always on time and haven't been late. I haven't had any problem communicating with them. I even talk to some of them off topic on msn messenger.
I have only dealt with gold4rs out of the 2, and they were ok, they got me my money, but was a little late, and i did get a ban. but if your after gold i would highly recommend King tijn, he's a great guy, always on time, and a reasonable price
This is like pepsi or coke. But offer similar products and services, both have similar procedures and are companies based in China. In the end it really makes little difference, both are legitimate.