I'm really enjoying this program. I've been looking for a basic system such as this for a while now. Local Knowledge was close to perfect, but just too damn buggy. I never came close to using all those indicators and analytics of other programs, so the simplicity of this product is more than welcome.
One bitch: I agree with the need to have more than one chart open at a time. At least three, IMO. This issue should not be overlooked.
Half-bitch: A drawing tool would be icing on the cake.