drain inspection cams: wired vs wireless, what's your pick?

I've generally leaned wired for reliability, but honestly, modern wireless setups aren't as flaky as they used to be. Had a tricky job last month—deep drain, tight bends—and my wireless cam actually held up surprisingly well. Guess it depends on gear quality and interference, but I wouldn't dismiss wireless completely. Still, if the inspection's critical or safety-related, wired gives me peace of mind every time...

Interesting to hear wireless held up in tight bends...but does battery life ever become an issue during longer inspections? I'd worry about losing signal halfway through—anyone had that happen?