WordPress is easy to learn and to use, and mainly it is good for a not techy.Joomla is easy for a techy.At the end of the day the customers want to earn money, you can use even CodeIgniter, or PHP language. The meaning of best means:
what is easiest for you
where your brain works better with success
what is making for you economy to time and a good name
70.0%United States of America (the)
14.6%Russian Federation (the)
10.2%China