Realistically, I'd be miserable in either because being faced with the existence of giant spiders would render me unable to stop crying.
If I had to choose, I'd go with D&D (unless it's the Ravenloft, Dark Sun, or Planescape setting). Steampunk makes me irrationally angry and PF embraces it wholeheartedly.
On a side note, I'm not certain that D&D's power levels win out. PF feats are much smaller in scope, but you end up with more feats than there are stars in the sky.
Last edited by iokus; 09/09/21 10:47 PM.