FFXIV has 8 player *raids*. (24(?) player LFR) 4 player dungeons (that get better as you level up) awful PvP and slow, yet enjoyable questing. The raids are extremely fun since boss encounters are rather beautiful designed but the game pretty much starts at lvl 44~50 (out of 60 lvls) everything before that is, gameplay wise, pretty much a freaking huge tutorial... most players gave up before they reached the higher levels. They made leveling a lot quicker now though, but be warned... the low level stuff is so-fucking-boring to play, you have like 1/10 of your skillset and while lvl 60 rotations and openers include like ~20+ buttons (bloated as fuck, yes it's really that many for some classes), the early ones require like 3-5.
If you play it, I'd recommend a Lancer/Dragoon, Archer/Bard, Thief/Ninja or Pug/Monk, because they have oGCDs which you can cast between the 2+ second GCDs. Caster's are turrets. All healers are 50% dps 50% heal throughout most of the content, if you enjoy that kind of class, go for it... in my case, they are the most fun healing classes (especially Scholar and Astro) I've played in any MMO so far. (Even better than SWOTOR's bounty hunter)
GW2 has enjoyable leveling (the MSQ are fun), decent-good PvP, god-awful PvE (dungeons). Classes are extremely unbalanced in PvE.
Swotor and Rift seem to have changed quite a bit, I'll refrain from commenting on them.