Like Reg I don't know much about the wine society. However I've been a member of the Sunday times wine club for many years and can't speak too highly of them. I guess their focus is on cheaper wines for immediate drinking but they also supply wonderful rare and fine wines. Customer service is faultless and delivery very rapid. I particularly like that they email you to keep you informed of progress with your order. I've found the telephone sales staff by and large to be very knowledgeable and they go to some lengths to seek out that 'special' wine or vintage when you need it.
Andy