At work, I'm constantly dealing with logistics and deliveries, so headphones are basically a must-have for me. I'd pick the Sony WF-C700N specifically for the office - they really do a good job cutting out the low frequencies, and that's exactly what gets annoying with office noise. The battery holds up to the advertised hours without any issues, though personally I take the charging case with me just in case. The Nothing Ear is cheaper, sure, but if you need a solid 8 hours of battery life, it definitely won't guarantee that. For the money, Sony is the optimal choice for your situation.