I'd like to make the suggestion to not over AA your objects.
When you over-use AA it creates a strange blur around your work.
For general use you don't want to usually AA a 45° line.
Unless of course you AA your line giving the impression that it's thicker than usual (eg. 7 colour example above), in which case you'll have to AA the 45° to give it thickness. Sometimes a 45° line can also look too clean against some AA'd lines.
This is from
here.
On the left, you see what many people new to the concept try to do: adding a single light shade to every pixel step. Not only is this wrong, but it looks like crap. In the center is a right, but not particularly good way of doing it: adding a shade only where it's needed. The curve is smoother, but the apparent pixel-steps are not eliminated. The final one is correct: I used two shades and it creates the illusion of a smooth curve. Notice that some steps have no AA at all, and some portions have multiple pixels of the same shade together. Single isolated pixels are not always the best way to go with AA, and I have found that often lines or groups of the same shade can complete the effect better. Just keep in mind what you're trying to acheive (and if you've forgotten what that is already, slap yourself* and go up to "Squaring the circle...", and promise you'll pay better attention next time.)
I notice that your reference image from Ilkke uses a lot of AA, but you should notice that he uses larger lines of AA to make the lines smoother.
Perhaps you should take a closer look at Ilkke's work to see how he uses his AA efficiently.
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