Just going to weigh in on a few things about biomed...
Firstly, regarding 2012 entry, this is what I remember reading somewhere:
-Minimum ATAR required with successful SEAS appliaction or KLD young scholar etc. is 92.00, as opposed to last year when it was 88.00
-The number of places available to SEAS applicants has now been capped to 30%, well below the 47% who gained entry in 2011 with SEAS.
-Because of the above two measures, it is almost certain that the 2012 clearly in will drop from the 2011 peak of 98.45. I would say maybe to around 97.00.
On the biomed vs. science thing, I'll do a quick summary of what I know. This is assuming you want PG professional health degree afterwards.
First year biomed is 100% set in concrete. You have no choice other than breadth. You do chem, bio, physics, maths and stats. A lot of people seem to struggle with physics and stats. They are not easy and not the best taught subjects, however if you put in the work you will be fine.
In science you must take bio and chem in first year to meet the prereqs for second year. The rest of the choice is up to you. Also note that the first year biomed biology subjects are more human focused and you don't really study anything to do with plants or evolution that is not related to humans. All in all, they are pretty much the same thing.
Second year biomed is where the degrees differ the most, and I have to say that biomed clearly wins here IMO. I haven't done the second year biomed capstone subjects yet, however they integrate foundations from a range of faculties including biochem, genetics, micro/immuno, zoology, physiology, anatomy and a couple more, which give a really solid background, and also meet many prerequisite requirements for majors in third year, whereas in science, you would have to take a lot of these subjects individually. That having been said, these capstone subjects are not easy, probably the hardest ones in the whole degree, and harder than the science equivalents. In biomed, you also complete another 2-4 science or biomed based electives, which should be used to ensure you meet the prerequisites for any major you are considering.
In third year, science and biomed are very similar. 10 of the majors available in biomed are also available in science, and you complete the same subjects for your major with the science students. The other 2 biomed majors are not available to science students, however they are still made up of regular science subjects. In biomedicine, you also complete a couple of third year core subjects, which I beleive have some degree of focus on things such as nutrition and healthcare etc.
So basically, science gives you a heap of choice, and lots of spare subjects to play around with, whereas you don't have this freedom in biomed.
In biomed however, you are in a cohort, and you always take at least one biomed specific subject in each semester of the degree. In first and second year, it is more like 2 subjects per semester spent with your fellow biomedders, which is pretty awesome from a social perspective and is one of the main reasons that I love biomed. The first year was a bit of a hump, but I am very excited for what is coming up next.
That having been said, as previously mentioned, if you are looking at exchange then biomed makes it tough to match subjects or make them up elsewhere, so science may be a better option. I have a few friends who have been going through a lot trying to organize their exchange in biomed.
All in all though, they are both good degrees, and it doesn't really matter which one you end up in to be honest.