I know that during the solemn Kyrie Eleisons during the ordination, I was weeping like a faucet. After the ordination, as I was holding the Lamb, I had a profound experience, and will not share the details, but did have a profound experience. Both the ordination to the diaconate and the priesthood were beautiful.
I will say this, however, that in terms of impact on my overall view of the Church, becoming a Pastor (Rector/Nastoyatel/Proistamenos) has been the biggest adjustment, with many many struggles. From my experience, as a layman, reader, subdeacon, deacon and 2nd priest, it was fairly "easy" to enjoy things without preoccupation and distraction even when things were "hard." But becoming the Pastor of a parish is a whole other ballgame. It comes with many struggles that are not known and cannot be explained to any but those who undertake it. You did not worry week after week about who was there and who was not, because their souls were not hanging around your neck and shepherd. You were not preoccupied with all their worries and fears (ever seen "Bruce Almighty," where he all of a sudden hears all of the voices of those who are praying and making it known what their problems are--with you as the instrument of solution). Somehow, Confessions are much harder as a pastor. Although I was giving confessions as a second priest, including to hierarchs, it did not seem to weigh as heavy. People's misunderstandings of you or the message you are preaching did not seem to smack you repeatedly in the face as much as when you are a Pastor. Somehow, your imperfections as a human being are not as much focused upon as a second priest, deacon, etc. laymen as when you are Pastor. Some want you to be perfect, and nothing less will do, even if they say that is not what they expect. Some hold the opinion they will quit the church before they ever tell you what problem they have with you, instead of simply talking and coming to a resolution, and their absence haunts you.