I love it. It's helped me level up so much quicker since I started a new character.
I have one HUGE question though. If i keep up the dungeon guide straight to 80, will I be missing out on any important quests in Northrend/Outlands? For example, unlocking things or achieving important achievements for future situations? If so, when should I stop the dungeon guide?
I know that reputation later on is much easier to gain, so I'm not so worried about that due to the daily quests. I just don't want to miss out on any certain mounts, skills, or achievements that are not a part of the dungeon guide.
I apologize before-hand if this is in the wrong section.