The distance from the exchange or the Tophat if it is in place in your area (DSLAM) is the most important factor in what speed you will get over ADSL/ADSL2+. You say you aren’t far but copper cable can run a funny way to your street. If you are less than about 3 km of copper from the exchange/tophat you will get around 7 Mbps (Mega bits per second) or better. ADSL has a max speed of around 8 Mbps and ADSL2+ around 24 Mbps (you need to be within about 1 km of copper to see this) but will be better than ADSL till about 4 km of copper from the exchange/Tophat. For Netfix streaming you will need about 5 Mbps at least to get best viewing. This doesn’t count anything else you are doing so more will be needed if using your ADSL internet for phone etc when also streaming.
Not really knowing if your habits will change when you get your own place I think perhaps around a 100 GB (Gigabyte) plan should be adequate. I base this on around 30 days X 1.5 GB/streamed show + around 50 GB for other activities eg listening to Spotify, reading/sending Emails and other browsing.
The modems/routers in most cases are adequate and if you take a longer plan not a month to month plan, eg 12/24 months, many are supplied free. Just make sure you get one that has 4 wired ports and wireless. Most Smart TV’s these days can connect wirelessly but if you have a dedicated PC it is always better to connect the PC via wire if you can (more stable connection).
Price wise of the larger operators TPG probably is the best cost followed by Optus and finally Telstra. Smaller operators buy their bandwidth from the bigger players and may compete a bit better than Telstra so for example look at Belong (Telstra subsidiary) $55 a month on a 12 Month contract for 100 GB a mth with a Sagemcom Modem that is Wireless N band + 4 X 100 Mbps wired ports so will be more than you will need to stream Netfix. There are others such as Exetel, iiNet (now a subsidiary of TPG), Foxtel (which will get you their basic entertainment bundle as well). All of them have people who love them and hate them, but I do recommend you read about all of them online and see which one may fit you best (remembering you are going to see more complaints than you will see praise).
With the above you will need to pay for a phone line so sometimes getting a plan that includes phone and internet can be a better deal, you don’t have to use the phone so can just pick a cheap combined plan. For example TPG offers a 100 GB plan with phone for $50/month. This plan has peak and off peak limits so watch out for this (make sure the peak times and limits fit you). For $60/month you get unlimited data.
If you get a Naked ADSL plan this will be a bit dearer than a similar data allowance (this does not include the required phone line) plan but will be a bit faster and the phone line cost is included but has no actual phone voice connection. Naked uses the bandwidth of what would have been your phone voice connection to get higher speeds on your internet.
In the past I have used TPG, my Brother in law currently uses them. They can/will take a while to answer your support calls. Price was reasonable for the service I received and my B in L is happy with them.
I have used Optus, a close friend currently uses them and has advised that it is similar to TPG for support calls. Price was again reasonable. My friend is reasonably happy and has remained with them for years.
I have used Telstra, they were the highest cost but if I had a fault they responded the fastest. Long waits at times on phone if ringing for support.
Most if not all providers these days use overseas call centres and this can be a bit harrowing to deal with at times. If your need for support is easy then most get fixed reasonably fast but remember there have been bad outcomes for many users.
Currently I don’t have ADSL and a smaller provider supplies my internet via commercial wireless.
Some comparison sites for you to look at:
http://youcompare.com.au/homephone (click the phone & broadband link down the page)
or this one for pure broadband http://youcompare.com.au/broadband