Headphones with their vastly superior transient response are more lifelike, but I prefer speakers.
This was my experience BEFORE acoustical control of my room which did for my speakers transient response an improvement so great i cease to use headphone...By modifying the pressures zone distribution in my room, the transient response of my speakers increased to almost the level of my headphone...Then with the other improvement related to speakers use like a better bass response, and a better listener envelopment factor, because the sound is AROUND THE head not in the head, speakers reign over my headphones now...
My speakers sound EXACTLY like headphone sound but around my head NOT IN MY HEAD....