1. It depends on your budget and preferences. You are supposed to do some research on the features of the doll you want, such as skin tone or breast size, vaginal features, body shape, etc. Reading the FAQ on the doll site is a good start. If you make a purchase decision, you can browse the suppliers on the site until you find a model that fits the price you are willing to pay.
2. Now there are some good brands available, such as WM, 168 dolls, Forever, Piper dolls, JY, HR, SE and so on. They have dolls with different styles, you can visit their websites, and you could talk with custom services to gain more details, I know they provide good service.