I've played most of these MMOs along with many others over the years. My personal view on the ones I played that are on the list;
Lotro Pros- great story and great community.
Lotro Cons - Too many fetch quests. Combat animation is awful especially for melee. Are they fighting or just doing a modern dance? All the mobs look the same, see those two orcs & worg, great now you have seen every orc and worg in the game. Enjoy killing them zone after zone after zone. Hey have you bought anything from the store within the last ten minutes, if not let us remind you there is a store, again , and again, and again. Horrible PvP, feels like it was shoehorned into the game just to have it.
WoW Pros- most polished and artistic of all MMOs. Nice cut scenes and zones get better as you level. Top PvP scene among MMORPGs.
WoW Cons - community is immature, all that polish means the game mechanics change every 12 months so hope you didn't get used to that play style. I have to buy an expansion and a monthly subscriptions to go with it? WTF?!
GW2 Pros - pretty, does a lot of what WoW did/does right, nice classes, zone boss battles, no monthly fees. If you don't like PVE, no problem just go straight into the PvP. Does not hit you over the head with the GW2 shop like practically every other game including ESO which has a similar "buy the game and no further payment" business model.
GW2 Cons - the stories and quest?...boring...Underwater combat, sucked in WoW and sucks even worse in GW2 and GW2 has more of it! At times feels like PVE is shoe-horned to a PvP game.
Rift Pros - if you liked GW2 PVE you will probably like Rift. Zone rifts are fun. Zones take their cues from Vanilla WoW.
Rift Cons - boring story even worse then GW2, PvP lacking compared to to GW2 or WoW.
ESO Pros - open classes, very pretty game for a MMO.
ESO Cons - open classes make everyone look the same and lack any uniqueness. The game does not know if it wants to be a traditional MMORPG or action MMO making the combat too clumsy for an action game and boring for a traditional MMORPG. You never really feel like you are playing a Bethesda Elder Scrolls game (its not made by them just licensed from them), more like a knock off. Makes Bethesda's Elder Scroll quests look like Gold.
SWTOR Pros - great story & community
SWTOR Cons - another game that doesn't really know what it wants to be, a MMORPG or single player RPG so struggles to accomplish one or the other in any fulfilling way. Combat mechanics are just as bad as LOTRO, my Jedi never really feels like a Jedi. Have we told you we have a store, lets remind you over and over and over.
If I had to place them in order
WoW - play this if you want to have swashbuckler adventures as an over the top hero
Lotro - play this if you have read all of Tolkiens books, visiting the Shire is a must
GW2 - play this if WoW is too cartoony
Rift - play this if you are bored with GW2 PVE and/or WoW
SWTOR - play this if you finally gave up on KOTOR III coming out
ESO - play this if need an elder scrolls fix but you played every mod there is for Morrowind, Oblivion and Skyrim.