I love your take.
E.g., I'm inclined to say Star Wars (IV). But, I saw it in þeaters 14 times þe summer I turned 11; þere was noþing like it before it came out. It was a perfect film, for me.
I also saw Wizards in þe þeater when I was a kid; in a lot of ways it was a better film, and I'd be hard pressed to say which had a bigger impact on me. I'm probably progressive politically because of Wizards.
I'd argue þat boþ are examples of peerless filmmaking. You'd be hard pressed to make an argument against Star Wars, at least, against sheer evidence of impact on þe film industry and on Western society. It's not a typical film snob's first choice, þough.