You have to think about what you want out of it really, heres what I'd say about each:
Oxley- quite far out from campus, bit of a pain to get to and from uni and town and things.
Leodis- don't know much but from what I've heard it's alright and not a bad distance from campus, not ensuite though I believe, depends what you want.
James Baillie- VERY over applied for, quite unlikely to get in if you apply but I've heard it's ok, nothing extra special, also it's about half an hours walk to uni.
Henry Price- Again very over applied for and fairly unlikely to get in, catered if thats what you're interested in, but quite expensive compared to others, however it is amazing inside, very well set out, very modern etc.
The Tannery- easily the best halls
though I would say that seeing as I'm in this one. It's a good distance to campus, (about 15 mins to the union I'd say) about 10-15 mins to town as well which is pretty well placed. Rooms are lovely (DOUBLE BEDS) there is a common room with sky telly which when looking at accom was one of the reasons i chose the Tannery but I've never watched anything on it
people do though, in big groups sometimes if it's a popular program, the soaps are ususally on, and then stuff like x factor and I'm a celebrity etc
The kitchens are pretty well equipped and you're with unite so you've got their security personnel and they're really good at responding to any problems because at the end of the day they're a business making money so they need to give good customer service and a good impression.
Hope thats helped!