Which laser marking machine is best？

Which laser marking machine is the best? 

I saw this answer on Google, but I found that the answer was wrong. 

First of all, look at the classification: 1, fiber laser marking machine 2, CO2 laser marking machine 3, UV laser marking machine 4, green laser marking machine. 

Secondly, it depends on the use; the most widely used is the optical fiber laser marking machine, but only for now. 

Because of its low price and wide range of uses, it is suitable for many kinds of materials. 

In fact, according to our current observation, the UV laser marking machine will be the best laser marking machine in the future, because it has made greater progress in metal marking and can be carved in glass and other materials, which other lasers cannot do. 

So, UV laser marking machine is the best.