Interacing Arduino mega 2560 easiest way ?

Hi i am going to interface my arduino 2560, method 1 i want to attach laptop to arduino meaning controling it using laptop as my robot is humanoid.

Method 2 probably using radio frequency, my question are the motor controller

For both method is different ?.

For radio frequency i need h bridge and for just attaching laptop and do a remote desktop control i need sabertooth. Is there a way i can get motor controller that allow me to control the robot with radio frequency and remote desktop.

What types of motor driver you recommend . By the way how te speed of the robot is controlled?. Is any motor controller h bridge or sabertooth allow me to adjust speed and acceleration

Ths forumers