You must explain the specific product benefits to your audience. You must have proof that backs up your benefit statements. Only after this information will your audience be open to hearing your recommendations. BUT if you go on too long with all your benefits and proofs the audience may be bored and frustrated by the time you get to the recommendations. Be sure you have clear, specific words that describe what you want your audience to do.
Communication is difficult enough.
Don t be vague. Now you present your recommendations. You get upset. Instead be prepared to discuss about some of your recommendations. Have some alternate steps to recommend if you need to negotiate.