My budget is $1200 and that should include the system, monitor and Windows 7.
I want it to be a gaming rig that could play Battlefield 3 at Very High settings @1080 @around 50+ fps.
I may want to overclock the cpu, however i do not think i need an aftermarket at this stage.
I probably wouldn't want Crossfire/SLI, but would still like quality motherboard and everything else for that matter.
It would be preferable if the case was appealing, and good for cable management and big enough for future upgrades.
Please do not use Newegg for reference, since i am Down Under
Amazon would be alright.
Sorry if i sound demanding, but i'd like you guys to suggest some good builds
Well, first things first. $1200 AUD = $1251 USD as of today.
What you've asked for is a tall order on that budget. I won't list sites, as you'd be wise to do a bit of digging to find the best local prices down there, but the prices I give are from newegg which is roughly market for the US and you should be able to get similar deals down there or on Amazon.
For a single-card system, you can almost always get a decent PSU in the $50-$70 range, not $90-$100, if you keep a eye out for rebates and don't overkill it with 750W (unless you get a great special). Such as:
Capt_taco is correct. I mis-read the statement about SLI/Crossfire. The Corsair 750W unit I listed is overkill. Something in the 500-600W range from Seasonic, Corsair, XFX would do just as good for you and cost less.