I just got a quote for an irrigation system for my yard. I was
explained this system does not require trenching and for this reason
is less expensive. He also explained that there are no other
differences in terms of performance or anything else.

I would like to know if is this information is correct - that there
are no major differences in the systems except for the installation
method and the difference in damage to the lawn. Are there any other
benefits involved in trenching for an irrigation system?

Thanks for your help