What are the top places in Burkina Faso to get the best currency exchange rates, and how do reliable options such as Faso Change, Extrême Exchange, Ali Services et Exchange Burkina, and Universal Change compare in terms of rates, fees, and service quality? Additionally, how do banks, ATMs, and licensed exchange bureaus differ in offering competitive rates, and why are city-based exchanges often better than airport or hotel services? Furthermore, what key factors such as exchange margins, hidden charges, and real-time currency rates should be considered to ensure the most favorable currency exchange experience in Burkina Faso?