I think TdH is a modern classic. I actually enjoy Rocabar more, though. I haven't worn it since I finished my bottle a couple of years ago, but I just smelled it again this weekend at Neimans and I was reminded how much I liked it. I think Rocabar is the most overlooked scent in the Hermes lineup.
I have bought acqua de parma for my father more than once - in my opinion it's a distinguished scent but stays grounded, and pretty masculine. It's what I think an older man who's done well for himself but isn't ostentatious should smell like.
That being said, it's amazing how different one scent can smell when applied to different bodies - I would never think that just because something works for me then it will work on everyone.
That assessment of Acqua di Parma is a good one and I'm probably going to get my Dad a bottle of Colonia Assoluta soon.