I just upgraded from a D300s to the D800e and I couldn't agree more. My auto experience was the exact same, just with a Corvette Z06. No matter how hard, fast I drove or what curves where in the road, that car could take anything I could dish out and more. Made me a better driver in the end, much like I know the 800e is going to do with my photography.
But just as important, is the continual education, support and camaraderie that I have enjoyed from this community. Very similar to certain Vette sites. I'm amazed at the talent around here and the vast amount of information that is exchanged daily. As my friend once said "Aint that internetty thing cool!!"