This thread has been linked in the Forum Information and Useful Threads sticky.
From a Progression perspective you have a couple of reasons to do a quest (aside from the fun/challenge): faction, coin, gear and/or experience. Most quests have been adjusted down over the years to not give much experience.
Good Experience:
Gear and/or starter coin:
-search Temple of Sol Ro for your class. Example rogues get Rogue Redemption . My progression necromancers like to get Harvester and Words of Darkness . Many classes have armor quests here too.
-Ranger usable, but questable by any, Morin's Sword (Gotta have SoW to catch the ghoul messenger. This is one of the easiest swords quests found in classic.)
Faction:
Edited, Jan 1st 2016 3:53pm by snailish