I think that part of the problem is that constellations don't exist in isolation. Orion is magnificent, but it would be far less of a constellation without the Pleiades and Hyades luring it on and the Great Dog nipping at its heels. To say nothing of Scorpius, on the opposite side of the sky, ducking below the horizon to avoid Orion.
Although I do love constellations, my real passion is for the night sky as a whole. No, make that the sky as a whole. The Sun is arguably the greatest astronomical object of all, and even clouds often enhance the sky's beauty dramatically.
Tony, I am with you. It is the night sky as a whole. Every familiar star, cluster, nebula, galaxy, asterism, and constellation feel like old friends to me. But it is fun to try and pick one so......
I will have to say Orion. It was my fav as a kid and one of three I could identify. I didn’t know the summer constellations until I bothered to learn them as a teen, but I knew Summer Triangle and the Milky Way.