Now that I have both the Nintendo Dream Guide (white on with 4000 written on it) and the perfect guide (shows the winter and summer images on the cover and inside cover) I can say that for the most part I prefer the perfect guide.
As a non-Japanese speaking American, I really appreciate the larger images, the shots of the inside of villagers homes, the pictures of each of the fish's shadows, etc. The perfect guide is definitely less extensive as far as information, while the Nintendo Dream crams it in till the end.
All in all, there are pages in each book that I've bookmarked in case the English guides doesn't include the info.