Beams or Cannons for block destruction?

I am making a small warship that is supposed to fight at high speeds by getting out of bigger opponents firing arc. I am using cannons right now, but I'm contemplating whether or not to switch to beams, as beams hit where you aim, so it'll be easier for me to hit when traveling at high speeds, and since I'm going to be at close range, the beams short range will not be a big issue for me.

However I heard that beams are not that good for block destruction. What differs in the way block...

Beams or Cannons for block destruction?