How to choose one cutting machine with sheet and tube cutting function both

In our suggestion, if your tube products very less, no need buy this mutiple mode, coz compare extra cost, is not ecnomic option; 
and if your tube cutting require lots of, then better considring buy extra professional tube cutting machine, coz much better tube cutting speed, and highly cutting precision.  

The sheet and tube cutting model normaly suitable for those companies that have both sheet and tube products, and no high demand for cutting speed, becoz the structure design, cutting speed will bit slower(around 15-20% less) than single function ( sheet cutting or tube cutting only) machine.

But if your application really need tube and sheet both normal cutting, then you should answer bellowing question before choosint the machine model :

-what's the products usd for?

-precisition require? what's the tolerence?