My sister, who graduated from Oxford a couple of years ago, told me that it was important to look at things like whether I liked the lecturers and what they had focused on for research etc., but that the most important thing was that I applied to the college where I would most like to live. All the colleges have incredible teaching and resources, that's a given. But I needed to apply to a college where I could see myself living and being happy – because it's going to be hard work and whether I actually liked the college is going to play a huge part in that. So I applied for LMH just because it's so so beautiful, and for me it was a perfect combination of not too old and not too modern. In the end I actually got an offer from St. Johns which I am still incredibly happy with, because it's a beautiful college with lovely grounds where I can see myself living and being comfortable. Plus it's in a great location. So I guess what I'm saying is that I feel you have to apply to a college that you think you'll be able to call home. If you're not a lover of ancient buildings then some of the more modern colleges might be best, like St. Annes or St. Katz, or if you'd prefer somewhere quiet then maybe go for a college that's slightly further from the centre of the city, like LMH. At the end of the day, we all know that whichever college we choose/get given, we're all going to become biased that it's the best college haha. Good luck with your book!