GLASGOOOOOOOOOOOOOOW!!! It's a brilliant city and just so much fun. I thoroughly enjoyed my 5 years there. I too was lucky enough to be able to choose between Glasgow and Edinburgh and I just got such a lovely feeling when I was in Glasgow - and the vet school just seemed to really care about their students. It's more rough round the edges than Edinburgh in places I felt but it's just so friendly. The new small animal hospital is amazing. There are a lot of exams in years 1-3 at Glasgow but barely any written work. And by far the thing I loved the most was that the vet school isn't a million miles from the city centre. You aren't in the middle of nowhere - you can still go out and go to all the main uni events without spending a fortune in taxis. And from the west end (where the main uni is) it's only a short ride on the subway into town. I miss Glasgow like crazy now I've left. It is just a brilliant place to live in. And if you are a country bumpkin - Loch Lomond is 20 mins from the vet school.
The downside - it rains. A lot.