Hart, whose Forest side are now in forth place, had to come from two goals down to secure a memorable victory in front of a record Ipswich crowd of 29,500.
He said: "It was a great game for the neutral to sit back and enjoy but certainly not for a manager in the dug-out."
Forest have now done the double over Ipswich after beating them 2-1 at home in November but Hart was full of praise for the tractor boys.
He said: "I consider Ipswich to be the best side we have played. If they hadn’t had such a bad start to the season they would have been in the play-offs."
The Reds now face a tough two weeks when they play East Midland rivals Leicester City(a), Wolves(h), Sheffield United(a) and Reading(a).