Reni is doing just as well as the other servers. In fact, Reni has, in my opinion, some of the best geared players on the US servers. Thing is, a lot of the power is spread across guilds, so other servers don't really get to see it, sadly. Closest thing to it was Ragnarok, but even then, there was a LOT of talent in other guilds that didn't get much notice. Im still waiting for the one day when Reni makes a siege-dedicated guild like Valk was, with ALL the top players in the server. Then go head-to-head with Valk. (hint: my money is on Reni).
But to answer your question, everyone seems to go to Artemis due to its pop. I say take a look at sw list for the next week, and you'll see Reni 3 guilds in the top 5.
Quality, or Quantity?
Ravesden, D/S/Wd 80/75/62
Retired. Click siggy for old RoM vids, among other things.