Sugestions needed for a new free to play MMO

I was wondering if anyone has any suggestions on a current free to play MMO while I gather up the parts for my new build...preferably something where pay-to-win is not going to make a huge difference (ie game braking) as I am not looking to sink any money in a "free to play" game. Also going to make it a little harder..don't just tell me (or link me) the name of game but tell be WHY I should play/try it

Was looking for something fantasy or sci-fi related. Just to be clear I played Star-Trek Online and WOW before...looking for something besides thows two titles.

Planetside 2 is a great f2p mmofps, though it will eat your CPU for breakfast, you need at least a phenom 2 x4@ 4.0 ghz

hang out a few months for wildstar, f2p with lots of ex-blizzard programmers, WoW style graphics with a sci-fi theme

You could check out Guild Wars 2, it's not free to play but you only need to pay for the box and there is no subscription. There is a Real money shop where you pay with a currency called gems but you can trade gold for gems and vice versa so that is not a problem. There's also nothing P2W on the Gemstore just some goodies and aesthetic items. As for why you should play it, GW2 does not have a normal quest system but a system called dynamic events that pop up in the wolrd while you wander around. Everybody can participate in those events, no need to pick up a quest from an NPC or anything. The Fighting system is also more active than in traditional MMO's in the sense of you don't need to stand still while casting/attacking but you can walk around and dodge enemy attacks. At higher levels and in dungeons that's a must or you will easily get murdered by trash mobs. The skill system is very cool too. You have a maximum of 10 skills on your bar, the first 5 are your weapon skills so when you switch your weapon you get different skills. e.g a Warrior with a Greatsword has 5 skills from the Greatsword when you switch the greatsword for a sword and shield you get 3 sword skills and 2 shield skills. The other 5 skills are 1 heal, 3 utility skills you can choose from a variety of skills and 1 elite skill from which most classes have at least 3 different ones to choose from. To bring more customization into your class you get a maximum of 70 trait points to put into a trait tree. Every 10 points into a branch you get a major Trait that let's you choose from a variety of different passive effects. Every 5 points into a tree you get a minor Trait that grants you a preset Passive effect. Lastly to the way the Server work. There are 2 Regions of servers, EU and NA, if you are on an European server you can quest any other European server for free to play with your friends. If you do a dungeon you can join people on different servers without having to guest as long as they are both in the same region. If you want to change your Home server all your characters get transfered. You have to pay a Gem Fee so you can earn it yourself by playing the game and don't have to pay anything for a transfer. I hope i could help you making a decision ^_^