Im all for underground power but underground telecom sucks! If its new, great. If its old and the access is behind everyone's home in a backyard? F that. People dig pools without calling USA (utility line markers) they place mailboxes, fences, plant F'n palm trees, run hardscape 36" on top the vaults...are you kidding? NO> seen every one of them 10 fold. And when they get wet...they stay wet. They both have their weakness but aerial is easy to maintain, troubleshoot and replace. Direct buried utilities are thee dumbest things I've come across. What happens in a flood? Ill tell you the aerial is usually damage free 'cept the power disconnects.