It has fine lines that even its immediate follow-on couldn't match due to carrier requirements and such, but yeah, seeing it up-close really brings to light that essential difference between carrier- and land-based aircraft in a way that reading or photos don't convey.
I loved seeing the YA-12 too. Again, subtle differences. I was surprised to see the chines, as I'd always thought they were an SR-71 thing. We go to these places to learn things, though, and I certainly did. I didn't put a pic up of it, but got a decent shot of the range-finder on BB-60's #2 turret, from the inside, that really informs what I've read about the technical stuff. Or how cramped a 5"/38 turret is. Dry numbers in a book are great, but seeing it closely gives me a much better understanding.