St. John's is nice: I sing in their choir and our rugby team and orchestra are joint so I see a lot of the place. It's stupendously wealthy which means cheaper food and battels (the food is not bad though not fantastic, at ordinary hall anyway). It's very big, usefully positioned and has a lovely garden inside. It's also quite pro-active for recruiting state school students with a 70% proportion, the highest in the university. On the downside, they do seem to work their students quite hard, and are generally in the top 3 colleges academically (though not quite as bad as Merton).