Frontiers has done a brilliant job in updating and expanding upon EQOA. Fans of the original will have little to no excuse in putting off purchasing this title to see all the new features. Master Class, level 60, and 150 square miles of new territory are three huge reasons to check this out. The loads of other new features don't hurt either.
For those who are new to EverQuest, Frontiers is harder to recommend. The quests are long and Frontiers is a serious time commitment. A lot of the time spent is used on hunting down hundreds of monsters in order to slowly level up and gain new skills and items. EQOA was overscored when it was reviewed back in February and even though Frontiers is clearly superior, the same inherent problems keep it from appealing to the more casual RPG fan.