Well now, I live in Goldney in Clifton so obviously I'm going to be biased and say CLIFTON! I mean, its only 20-25 mins away from the uni and is sooo much more convenient in terms of being near to the centre of town, etc, so you don't have to waste money (unless you're loaded/too wasted to care!) on a taxi or bus fares in general. Plus the fact its nearer to uni and all the other commodities means you'll get exercise everyday but not too much!
However, I do know a girl from Wills hall who has ME, but she's got a car- which obv helps!
Oh and regarding the whole being 'cut off' here- *******s to it! Tis NOT true at all- due to your course, various pub crawls and getting to know people through others, you meet people from LOADS of halls! I mean, I don't think I have any less friends than any of my friends who are at Stokey B!
So all in all (oh lord, too many essays!) I think it depends whether you want to walk further (and across the Downs- ARGH!- NOT good at night!)!
Hope that helps!x