Dear,
According to your request,you can choose desktop CO2 50w laser marking machine or co2 80w laser cutting machine.
These are different machines,the size of former is small(A type). And the size of latter (B type)is bigger than former one, but the price of B is lower than A.
You can choose two or four heads if you choose B.
In a word, I advise you choose B type machine.
Thanks.what's your opinon.