For the last five years I've worked as a sales engineer for XYZ company. For the last three years I been the top producing sales engineer in my division. Notwithstanding the success I've achieved, one of the challenges I've faced time and again is trying to convince prospective clients that they should swith from your company's platform to XYZ's platform. Your company has a stellar reputation for quality and customer service, and you're unquestionably the leader in this industry. XYZ knows it, I know it and the industry knows it. I'm confident, if given the opportunity to sell your products, I could be one of the very top producers for your company.