Esta perogrullada de la posición en el cine me parece más importante de lo que a simple vista parece.Para mí por lo menos puede marcar la diferencia entre meterse o no en la peli. (Naturalmente esto depende de que la peli valga para meterse o no).

Mi preferencia personal en distancia a la pantalla es de 1,3 a 1,5 veces el ancho de la misma (mucho más de eso parece que no me envuelve ni la mitad y menos no estoy cómodo).
Por supuesto esto de la posición "mágica" es relativo . si la sala o la imagen son nefastas o si te toca un palomitas-con-refresco al lado o un charlatán, pues la magia se acabó.Ahí estoy de acuerdo con los que prefieren su casa.Pero con un poco de suerte, la experiencia del cine es otra cosa.

De la gente que más controla a mi parecer sobre audio y video:
(espero poder ponerlo traducido después)

"In Search for The Magical Angle of Vision.

During our first five years of fundamental research for the Ultimate Home Theater, we visited a lot of the best (at least that's why they were recommended to us) demonstrations. And among those, we saw plenty of small screens from too far away and plenty of too large screens from too close. Each time we tried to find the optimal distance and to remember it.
In order to be more systematic we even imagined a very pleasantly unusual measurement campaign. A few of us simply went to movies continuously for few days... Selecting off-hours of already well seen films, we wear special glasses, modified to measure the angle of the screen vision. Moving from row to row in various movie halls we tried to find out the optimum position. Not too far, or you loose the action involvement, not too close and the action makes you dizzy.
Results from the participants were reasonably close, so we concluded there is quite a narrow window of angles that provide you optimum involvement without dizziness...
Very subjective, we agree, but quite conclusive.
The results : stay between 28 and 38 degrees (angle of vision of the screen width from the sitting position) and the magic is there.
We applied this rule in all the installations we made since then and, so far, it represented a sort of optimum for each room and each screen size we tried......"


"First Basic Rule : have a listening distance from the speakers approximately 1.5 times their distance.
Second Basic Rule : put the speakers slightly advanced front the front wall or the screen surface (something like 3 to 4 feet is usually good).
Third Basic Rule : try to fill the visible width between the speakers with the screen (on the front wall) and forget anything else about the screen dimension"