Quibbler or Daily Prophet
This is another tough one because I'd love to read both. Both publish equal amounts of fiction, generally haha. I think though, I'd have to go with The Daily Prophet purely because it's the more 'newspaper-like' one. I know that sounds like a rubbish reason, especially after the stuff it prints, but it's where J. K. Rowling makes her political statements the most. She shows the influence of the government over the national newspapers and teaches us to never believe what is printed. There's just something special about it to me. Plus, I would LOVE to see the moving photographs.