I was furballing yesterday afternoon in the D11 and have always preferred the D11 or the D25. I only use the D40 as a bomb truck and only occasaionally and hadn't flown the N much.
I had an 8 kill sortie in the N last night. It's fast, handles smoothly, is lethal, manouvers well enough (I outmanouvered a Yak on the deck) and, unfortunately, climbs like a Jug. I think I like it better than the D11 or D25. It's just so smooth to fly. I think I even prefer it to the 51D.
I won an extended turn fight last night on the deck in the D11 vs a P-38 and I'm not sure the N would have done that but I bet I could find a way to make it work.