Original servers, normal ruleset, $15.99/month. Started under 3 weeks ago and just hit lvl 50 this weekend with casual play and am doing the Champion quest line that should give me a good main weapon to start off my RvR adventures.
They just did a 10th year anniversary patch adding, amongst other things, content for new/returning players, like starter quests etc. Nothing huge but enough to help people get back into the game.
Battleground instances that change every 5 lvls make you rocket in xp all the way from 1 to 50 so there's no real grind as it's so fast. Doing kill quests and PvP in the battlegrounds earn you xp and bounty points (bp) and you use bp to buy cheap gear while lvling.
They only have 3 worldwide servers; Mordred that has a PvP ruleset (total ffa pvp), Ywain that has a normal ruleset (3 realms fihting each other. You can make chars in all 3 realms), and Gaheris which is a Co-Op server (all 3 realms work together doing PvE content).
People say that Mordred is completely dead and that it's pretty much the same few guilds fighting over the same keeps/outposts. Ywain is split into like 9 clusters but all 9 are still the same server. The only difference between the clusters is their associated housing areas. I play on cluster 7, which means that I can't get a house in any of the other cluster's housing area but I can still go there and check out players vendors etc. Because of this, Ywain seems to be everyones favorite choice as population seems very high as there're always people around during all hours of the day/night. I've never heard anyone mention anything at all about the Co-Op server so that maybe says more than anything about that server
I don't know where the servers are located irl but I played from California when starting the trial and the game ran just fine without lag. Came home 2 weeks ago and game has been running really well here also.