If you need sealed then SVS is a good buy. I haven't heard much info on the ECS of late. If you like solid and powerfull LFE for movies then go ported and get Outlaw's LFM series either the Plus or EX. This will give you the solid power you need. Outlaw makes great subs and with good value.
_________________________
"There is one who comes after me who's sandals I am unworthy to unloose." John the Baptist