Not to be my normal dickish self, but if you are consciously trying to align front and rear sights - you're doing it wrong. Your brain will naturally guide the front rear alignment.

Front sight, press.Front sight, press.Front sight, press.Front sight, press.Front sight, press.Front sight, press.Front sight, press.Front sight, press...Reload... (1911)

But I agree that a red dot is nice.