- quests are the same for all races;
- on tortage the destiny quests have some differences depending on the type of class (soldier, healer, rogue, mage)
- after leaving tortage, your destiny quest "handler" is located on different areas, depending on the race (aquilonians- old tarantia, cimmerians- connarch village, stygians- khemi, khitan- gateway to khitai), but all of them give you the same quests
- different races have different types of classes available, for example, cimmerians cannot be mages
- by default, each character has a dance skill of his race but theres also quests to gain the dance skills of other races and these quests depends also in your race
- some quests can only be obtained by certain classes, like for example the quest inside the black ring citadel wing-1 that only mages/healers can get to unstun players on first boss fight
- you can use a chat channel for players of your own race only
- dunno if i miss anything , but again its more of a personal choice, i dunno if there's any advantages of races on pve at least
Khitans have the best oracle. But I assume free players don't get Khitans.