I've messed with the aWT HQ mod earlier, but I removed it.
Sometimes the build up of the graphics was terrible and (for me) I didn't really see any difference quality wise. I do have a really good video card at the time (Windows experience for graphics 7,7 out of 7,9) with a maximum resolution of 1920*1080, maybe that's why, there's all most no viewable difference for me.