for eng movies, popcorn is among the best u can get.

it is torrent based, so it can consume anything from 2gb at any one time up to 8gb  for the largest and best files.

to access those, u need min 16gb android which after the the usuals, leaves 8gb or so free.

an 8gb android may only have <4gb left free - u can only play some of the smaller 720p files in popcorn.
also, take note of the broadband speed requirements.

small files need only 200KBps, largest ones may need >800KBps.

so, it will need 10mbps (1250KBps) min to play the largest files, besides the android free memory requirement.