Do not get me started on that issue. For most of the year, we had bad internet (and from what I heard people in Northfield did not have Wi-Fi at some point at all). It felt like we were in the 90's for 3+ weeks. However, it has since been upgraded and I have not heard any objections. I think (= not sure) that there will be major update to the Internet system for next year's freshers, but you can never be sure.
To answer directly to your question: It does not depend where you are (= how much you pay), because the system is equal to every accommodation.
Also, (and this goes out to everybody), I think many of you would not be familiar with this issue so it is better if I told you.
As many of you know, the Sussex campus is 4-5 miles distant from Brighton and Hove. Thus, for going out, you either have to use bus or train. However, as trains are not that convenient, many of us prefer buses (23 or 25, as they come to campus). The good part is that 25 runs 24/7, so you can always get home after a night out. Another great point I can make is that you can get a return ticket and it is valid until 5AM on the next day (so, if you go out you can get home with the same ticket).
However, that is where it all turns ugly. All of the buses in town are owned by one company, which has forced other competitors out of the market in previous years. Thus, that one company has a monopoly over the student population, which is dependent on buses to go to work, or home, if you live in Brighton. Whilst it is true that the company offers 7-day tickets, which cost 12.50 or all-year passes (around C300 if I am not mistaken), most freshers live on campus so they do not go to town that often. As it currently stands, a day return ticket costs C3.70, and it is subject to increase by September. Also, a single ticket costs 2.30 as of now. In February 2011, a return ticket had cost only C2 and a single C1.
Sorry for the long post, but I thought you should know that before you come as it was a major blow to many of us, who rode the bus for the first time. Luckily, we came up with a solution, but because I do not want to advertise, if anyone wants to know, write me a PM.