I'm a big fan of Brand New Day overall. Creatively inconsistent of course, its to be expected when you have a different creative team for every story arc passing things along like a baton race, but the pacing of it coming out 3 times a month means if you didn't like a story, you could just wait a month for a new one, the momentum was so quick. Gale and Guggenheim's stories are mostly bad, but Slott, Van Lente, Kelly, Wells, and Waid do some overall very strong work. I feel BND really revitalized the supporting cast around Peter, from the old ones like JJJ losing the Daily Bugle and becoming mayor of New York, to the new ones like Norah or JJJ Sr. There was a feeling that things were progressing, even if they really didn't, that I think is core to something like the Lee/Romita or Stern/Romita ASM runs.
And there's some REALLY great art, just the most consistently interesting looking comic from the Big Two, especially for a big icon like Spider-Man. Marcos Martin, Javier Pulidio, Phil Jimenez, Emma Rios, JRJR, Bachalo, Fiumara, Paolo Rivera, Steve McNiven, Eric Canete, etc.
The good definitely outweighed the bad, and a few of its stories are some of my all-time favorite to star Spider-Man.