"to be" and modals before adverb?

Someone just told me that the sentence - " It simply is the best computer we have", is wrong and that it should be like this: “It is simply the best computer we have”. I’m totally confused because I’ve never heard of any rule saying that the verb “to be” and modals have to be before the adverb. Is there really susch a rule or is it just a matter of emphasis?


I think this is a question of balance. In other words ‘is’ is a short sound and ‘simply’ is longer and it sounds better to say: It is simply …At the same time of course by saying ‘It simply is…’, you are creating an emphasis, which is what you said.