The best computer to use is a laptop computer.
A laptop is a personal computer that can be easily carried to a number of locations.It runs the same set of software and set of files as that of a desktop computer.
Advantages of using a laptop computer is that it is highly portable and allow you to use your computer almost everywhere.So you get more work done and no time is wasted.He can also use it during travelling where he can attend to his clients anytime..
The other advantage is that it lowers power consumption .This is beneficial for it lowers the cost.
so i will recommend a laptop computer.