Your choice of zone matters alot, I leveled a NB monk to 30 last night over 2 hours and that included 3 dungeons (gnomeregan/stockades/blackfathom deeps) but I was leveling in Ashenvale which for horde is absolutely horrible.
Quests are really far spread out, you have some really annoying ones like finding 9 stealthed NE archers that are spread across a massive quest area. You get sent back and forth from one side of the zone to the other and even back and forth between Ashenvale and Orgrimmar a few times.
So choose your zones wisely, some of the Vanilla quest content flowed really badly and can waste a ton of your time especially with only a 60% ground mount. I'm going to finish the Zoram'gar section of Ashenvale then I'm getting out of the zone ASAP for a smoother one like Hillsbrad or something.