There won't be any significant differences between colleges for vet med because, as with every other course, most of the teaching is done out of college. The differences will come with the type of college and the amount of students and vet students. You need to find somewhere you could live and feel safe, happy and comfortable because it will be your sanctuary for 5 years whilst you're studying. My advice would be to read up on all the colleges that offer vet med, make a short list, then go to an open day and visit them. If you can then visit some of the ones you wrote off too, because you just never know. Also don't always listen to people's opinions, you really need to go and visit it to make up your mind. It's not like choosing university halls, this place will literally be your home for the whole time you're studying.