The highly anticipated CodeMax v4.0 (with autocomplete support) has been released by WinMain software(Barry Allyn).
I've been testing this baby for the past 3-4 months with the development of HotStyles and HotHTML 4 both of which use CodeMax v4.0 exclusively for the editing component. If your in the market for a really powerful and feature packed (literally) code editor look no further than CodeMax:-)