Im looking for some helpful information before I purchase an outboard motor. Im looking to buy a 9.9 or so hp outboard for a 16 foot alum boat. My questions are: what is the benefit of a 4 stroke? Which models in this hp range are the best? Which models can be easily converted to future remote control and has anyone done this conversion. What should I look-out for if I purchase a used 4-stroke (besides the obvious) ? Thanks for the help. 