both, but specifically both, the further each type goes in thier own direction the better, like the busy stages absolutely packed with detail, and very energetic crowds, while the restrained maps do all the can to give the sense of peaceful isolation.
the sense of contrast only makes each type feel even better.
on a differant note, i absolutly love KOF 13's Egypt stage
going from this,
to this a couple rounds in
and finally to this,
From very calm and subdued, to frantic and energetic, the gradual changes in lighting causing the colour pallet to literally heat up, the monks(?) frozen in the first stage, beginning to animate in the 2nd, and frenzied movement in the 3rd. it all gives a palpable increasing intensity to any match, even ones as lame as mine (i really suck at KOF).
it really has the best of both worlds.