Nexus, I recognise your name!
A lot of EU players have left to start fresh on NA.
Pros:
1. It's more populated (Everywhere you go is busy, grouping is easier etc;)
2. Prices are a little bit cheaper than EU
3. There's more choice
4. On average, the player skill level is worse than EU.
5. I have less general issues (dcs and whatnot) on NA, that's not to say they don't exist but I don't have nearly as many problems as I do when I'm on EU.
Cons:
1. They make you pay a weekly fee to be in a trading guild (LOL, never paying that, ever.)
2. You'll have to regrind all your gear/CP/titles/PvP rank etc; (But you'll have a lot of fun beating 561's in duels with terrible gear and 100CP on the way)
Consider it. There's an EU guild on NA with ~300 members, most of which are from EU I believe.