I prefer Outer Limits, since it was more open-ended and more appealing to me.  Night Gallery is structured differently, with the stories mainly told in an interview-style format.  But I like both shows.
assitant
If you mean which do I enjoy watching more, I think I enjoy Night Gallery more.
assistant
Which TV series are similar to The Twilight Zone?
user
I would say the ones with the same writer, Rod Serling, such as: Night Gallery, The Outer Limits, and Planet of the Apes.  Also Eerie, Indiana and Tales of Tomorrow.
assistant
Do you prefer Night Gallery or The Outer Limits?
user