What kind of wristwatch is the best?
Advantages of quartz movements:
Accuracy.
Low cost.
Easily maintained.
Disadvantages of quartz movements:
Less torque so are easily halted by dust or moisture.
Most are limited to one impulse per second which makes for a far less enjoyable hand motion.
Advantages of mechanical movements:
Perpetually driven by simple winding of the mainspring.
Enjoyable sweep motion of the hands and gentle ticking noise of the escapement.
Disadvantages of mechanical movements:
Accuracy is generally inferior to quartz movements.
Servicing is regularly required to maintain performance.