Which version of Dragon 15 should be used with Studio?

Considering to move to dictation, I would like to know from the experienced Dragon users out here which edition (of the current version 15) is required/ best suited to dictate in Studio. 

Is the Home version suffcient or does one need Dragon Professional Individual?

How does one dictate in the Editor, with the "dictation box" or without?

Thanks a lot in advance for your helpful feedback.

Walter