Quote Originally Posted by 'Greythan',index.php?page=Thread&postID=85418#post 85418
Thanks. I'm tempted to drop out of SM now (again, 37 atm) and group my four, have my booster follow ungrouped, and start questing. Think I'd run myself dry through your list before 45?

Feel free to add to the thread I linked. I see it as the beginning of a quasi-leveling guide for boxers. Others have alluded to it, but we really should start some sort of inventory and progression of kill quests (or at least boxer friendly quests).
I don't have experience with the horde side above level 20, so this is all coming from the Alliance-side quests. I've followed Jame's/Brian Kopp's guides for the last 15 levels, and it's been really easy to round up about 6-10 quests at a time, turn them all in, and gain 1/2 a level right there. There are a lot of kill quests in STV for the level 35-42 range, and some easy kill/collection quests in Tanaris & Feralas for 40-45 range. Collection quests aren't terribly fun, but as long as you're grinding out xp and gaining loot, it's not too bad. I've done quite a few of the collect 10x+ quests (x5 characters) now, but perhaps I'll go through the guides that are already out there and create a revised Alliance guide aimed toward multiboxers. (Drop collection quests if not in a chain or infrequent drops, add in group/elite/instance quests).

My progression went something like the following:
- Quest till level 20. Elwynn Forest / Westfall / Loch Modan / Redridge - Wanted consecrate at lvl 20 for easy-tanking.

- Deadmines 20-25. Mix in Redridge / Duskwood / Wetlands quests when bored of instance.

- Stockades 25-30. Mix in Wetlands / Duskwood quests - especially the 4 'elite' Duskwood ones - Stalvan, Mor'Ladim, Morbent Fel, Embalmer.

- Gnomeregan 30-35. Some hate this instance, but I know it well and don't mind - plus there are some good drops and quest rewards here. Finish up Duskwood & mix in Arathi Highlands & Shimmering Flats in 1k Needles.

- Scarlet Monastery 35-40. Good drops, especially the +spell dmg gear. Mix in Desolace (especially for main SM quest reward) / Stranglethorn Vale / Arathi Highlands / Dustwallow Marsh quests.

- Uldaman 40-45. More decent drops. Mix in Badlands / Tanaris / Feralas / Stranglethorn Vale / Swamp of Sorrows / Hinterlands (get Mallet of Zul'Farrak).

- Zul'Farrak 45-50. Easy instance when over-leveled, just always kill the Shadowhunter trolls first. The temple battle I could do AFK - keep 4x magma totems up. I got lucky and landed the two rare swords to make the Sul'thraze the Lasher epic 2hd sword by my 6th run. Mix in Tanaris / Feralas / Hinterlands quests.

- Maraudon 50-52. The instance was cake, except for Princess Theradras since she's immune to lightning. Thrash Blade quest reward made it worth the fight. Finish up Hinterlands / Tanaris / Feralas, then do all of Searing Gorge (EASY quests in a small zone for a lot of quick XP!) and start Blasted Lands.

- Sunken Temple 52-55. I actually haven't made it over to do this instance yet, but I'm sure I'll be way over-leveled/geared for it. Mix in Blasted Lands / Felwood / Un'Goro Crater / Winterspring.

- BRD / Scholo / Strat / DM / etc. 55-60. I'm cruising through quests so easily that I don't feel a need to run an instance right now. Plenty of quests still available in Felwood / Un'Goro Crater / Western & Eastern Plaguelands / Burning Steppes / Winterspring / Silithus.

60+ Outlands.. I'll be running instances / dailies for rep before doing any of the quests, so my trip to exalted should be easier in the end.

Overall, I'm surprised how much the 2.3 patch has made leveling easier. Quests are now huge for XP, and I'm finding myself out-leveling the instances I'm planning on running by doing quests in the area first. I have a feeling it's possible to get to 60 without doing difficult collection quests or grinding instances multiple times. I have focused on quests given by human NPCs from the beginning for the sole purpose of Stormwind reputation to get horse mounts for my draenei, so it's not necessary to do quite as many quests as I've done.
I'm actually going to try to complete as many Old World quests as possible before moving to Outlands, so when I start with the reputation grind of instances before questing, I'll hopefully begin at level 62 or so.