There are a lot of very important items in these documents and you do not want to make a mistake here. This begs the question, "What is the most important clause to include in a purchase agreement or letter of intent?"
All parties to the transaction, Type of deal structure , Price , Payment structure, Non_compete ,Transition plan ,Closing date ,Contingencies (i.e. due diligence, financing, etc.) ,And identify other items to be negotiated.