Your going to love this KIGO.
Here is a website that shows your local exchange [Doubleview] and all ISP's that supply ASDSL2+ from it.
The ones within a blue banner are the ones you should be looking at.
There's 13 of them.
http://www.adsl2exchanges.com.au/vie...?Exchange=DBLV
Click on the heat map function at the top of the map to see what speed you can expect from your address & same thing for the RIM function.
The maps legend is at the bottom.
I wouldn't take much notice of the "Bundled required" on a lot of those plans that are showing as there is usually a OPT out of bundling for a $10 extra fee per month,well there is on my Netspace ADSL2+ 40 plan [which is available to you in WA by the way]
Also just use those plans as a guide,as if you visit a ISP's website you can often see that plans can change from what's listed there,usually a better deal for you as the download limit is usually increased but the price stays the same [my limits been increased twice, Doubled in fact, without costing me anything more]
The tricky thing to watch out for is the length of the contract,and what it will cost you to get out of it if you need to.
You might be able to get "Naked ADSL2+",that is they use the phone lines already running to your house but the telephone is not actually connected,so no line rental fees.
That can be a bit of a quagmire, as the lines belong to TELSTRA,and you [and your ISP of choice] can have a very frustrating time getting it sorted.