Rift would be my choice. Just experiencing the 1-60 leveling... I think it's the best leveling I've ever done in any mmo out there. Zone events are amazing. Server transfers are free and you can switch servers anytime. Class system is always very well done. End game is cool if you can get the ridiculous hit rating needed for raids. 5 man heroics are still kinda ridiculous for your average player. Even the normal Storm Legion dungeons require skill.
Planetside 2 gets my pick for the other mmo. They just came out with their 2nd performance update of this late year. The 1st one doing extremely well. seeing lots of new players(low battlerank) around. This is the game everyone should try out for a few hours just to feel the epicness off the battles and how much is going on in the map.
I'm about two weeks into final fantasy xiv and have no issue finding lots of folks my level for questing. I'm level 19 now and about to boot up the game. --- Today is the Tomorrow you were promised Yesterday