Well besides the BScIT course, there are obviously the other courses you have mentioned, such as the BBus/BComp, which is what I'm doing and the BScIT Innovation course. They are both good courses.
The BScIT is probably the most technically oriented course though. The BScIT Innovation course combined the main IT core subjects from BScIT as well as some foundation engineering and business subjects to give you a basic understanding on how to basically market and sell your own IT products. It's mainly for people who want to develop their own products, though depending on what electives you do in that course, it can be similar to the BScIT and most people who graduated from that course this year seem to be going down the same pathways as the BScIT graduates anyways.
As for the BBus/BComp, it is obviously a lot different, but the computing side is the same. Basically you learn the same stuff as you would in the BScIT, except for a few subjects, and you still do an IT sub-major as you would in the BScIT, so you can still specialise. On the BBus side, you basically do the same core subjects as the single BBus degree and you do 1 business major (such as Accounting, Finance, Economics, etc). So basically its 2 years of IT and 2 years of Business, mixed in together (ie. 2 IT subjects and 2 Business subjects per semester). Combined degrees are pretty popular nowadays and employer's like graduates who have skills in 2 different areas. There are some other posts by myself and other people around here which explain this course in more detail.
The other combined degree's available are BScIT/LLB (which is a bit high for your UAI
) and the BScIT/BAIntStud. If you're interested in International Studies as well then you might want to consider this one too.
As for the Building, I'd say its the best IT building around at the moment, though thats my personal opinion.
Besides UTS, all the other Sydney uni's offer some sort of Computer Science or IT course, however, trying not to be biased, graduates from a UTS IT degree are highly regarded by employer's at the moment and this is proven by the job statistics for UTS IT graduates. The UTS IT courses are pretty hands on and practical and it is taught in that way as well.
As for other avenue's, I'm not sure what else I can say. I've given you quite a few choices. I would personally recommend you do IT at UTS, but thats just my opinion. If you really want to do Networking then do the BScIT. If you're interested in Business as well then do the BBus/BComp.
Have a look at the details course information at:
http://www.handbook.uts.edu.au