Please help me... I need to make a solar boat for a project. the problem is this that i have two options of buying the solar panel which suits my max. dimension of solar panel. one is 6V 300mA and other one is 4V 400mA. Now i am a bit confused about which one to buy.as i need both the speed and torque in the motor running via it to run the race,, Please help me to choose which one will be better if i use to them to power a motor to run my boat.. Thanks in advance !!!!