My father was Polish and my mother Hungarian, they spoke their language fluently as I grew up but I only learned a few words since when I was born we all lived in the USA so my grandparents raised them in their native tongue.
Quieter props sounds good but the motors running hotter doesn't. To me the Tello is pretty quiet outside already. I never fly it indoors, it freaks out my Chihuahua too much.
I've had my Tello a while and never crashed it once, I fly carefully and have never had any issues with props or battery failures. Maybe I'm just lucky.