I just checked, theres 146 people in John Burnett...(42 single rooms, 34 shared) and then there's the annexe which is right next to it which has 36 single)
None of the catered halls would ever be as small as 50 people. I'm in Uni Hall which has about 280 people. Personally I prefer Uni Hall (I have stayed in JB at the Sutton Trust Summer School)

Def, if you want to meet people, go into a catered hall!
Hmm it is kinda luxorious seeing as it's all ensuite, underfloor heating, double beds, but they rip you off for that so much! I know quite a lot of people in DRA, most of them are happy but don't feel the community spirit, but some feel really isolated, dont really get on with their flat mates, and cos of the lack of community spirit, don't really know people from other flats. Unless you're absolutely sure you're going to take part in a lot of clubs and societies etc you could feel isolated. Like my bf for example, he;s in DRA and he gets on with his flatmates ok, but he made friends from a group in Regs and will share a flat with them next yr, he also tajes part in a lot of societies etc, but he was saying yest he couldnt wait to get out of DRA. He wishes he'd been in a catered hall, there are so many more people to meet, and who you see everyday at meals, in the corridor, kitchen etc, and all the events regularly put on by hall. If you really want self-catered I'd go for it, DRA is of course very nice and luxorious, but personally I thnk catered is the best option for first year, and then DRA or any of the other self-catered halls or a private flat with a group of friends in 2nd year. I'm going into Albany Park with a group of friends from hall.
I also don't understand why DRA is so expensive (well obv cos of all the luxery etc), but it's more expensive than i'm paying for Uni Hall, AND I get food for that price too...
I'm saying don't go to DRA, but just to put my feelings!
I guess it depends on what kind of person you are, and what you want from your accommodation.