This sucker:
So stoked. A mate at work got it for me through a supplier, basically a display model. No box or cables or anything (trays though, obv) for around $660 shipped. Had been used (was a small amount of dust around vents) but considering new they're still around $1100 (at least) I'm over the moon.
Best part is, there are SO many plugins and modifications that can be done. The guy who got it for me (who paid near-retail only 12mo ago trololol) has an NZB plugin to automatically download from Usenet, checksum, download needed PAR files and extract, as well as Sickbeard to automate downloading of TV shows. Will also be getting Twonky for UPnP stuff. Said mate is also going to the trouble of soldering a VGA port to the motherboard (there's a space for it there, just not hooked up) to hook up a mini LCD screen.
When I had it delivered to my work, I also ordered some Arctic Cooling case fans as well. May upgrade the PSU fan as well, but I'll see how I go noise-wise.