The choice for me was easy. The Evid's are designed for stadium use outside in the elements. They are light, efficient and relatively cheap from
www.audioallies.com, adding clamps from Raul/Precision Metal Works. Mine were on top of a Monster Tower. It was a good economical setup on the boat I just sold. I feel the sound was about the same as most 4 - 6x9 systems.
My next boat will likely have something from NVS up on the tower. I wouldn't consider a car stereo based setup.
Mike