I was going to go with some GSkills..---> G.SKILL Sniper 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800).
Which Asus mobo are you using?
One word of advice with Llano though. It's annoyingly picky with RAM settings; I had to change the Kingston HyperX modules for Corsair Dominator ones for it to work fine (no idea why). It really makes "good" use of RAM, so, don't be that "cheap" when looking at RAM modules.
In a positive light, the Asus MoBo for the A8 I have is wonderful. I know "cheap" Intel MoBos are not, so it's up to you.