I was too young to see any of the OT in theaters except ROTJ, but a tornado thwarted that. Long, pointless story, that one.
Anyway. As a really young kid, I liked ANH the most exactly because it was so accessible. At closer to 9 or 10, I preferred ROTJ. In all cases, I thought ESB was a bore.
When I was in college, obviously it was all about ESB. And as favorites go, that hasn't changed. But... I dunno. I watch ANH now and I just cherish it. Does that make sense? I just can't take my eyes off the damn thing.