I am picking up a Table Saw and it comes prewired for 110, but have
been told it can be switched over to 220.

Right now I do not have a 220 line in the Garage, but am thinking of
having an electrician come out to put in the line. Is it worth it?
What are the benefits of going 220?

I probably need a line run anyway as I keep tripping the circuit
breaker with a few things running at the same time.

Thanks,

Adam