It's not just what you say, it's what you use to say it. Visual aids are part of any speaker's style; if they aren't cohesive, they will reflect badly on you. Even the type of microphone you use will affect your delivery. A cordless mike allows you to move around and is a good choice for restless speakers. People whose delivery style is stationary will want a mike they can hold onto. As I said earlier, if you wish to appear intimate, speak softly and close to the mike. How you use the mike can become part of your unique style.