best (strongest) classes atm are scout & paladin
bard is the worst class now
psi is good and will be even better next (?) patch
you can play for free (with pay what you want ranging from 0 to whatever) or pay a monthly amout... ("free to play" or "subscription")
if you need infos about the differences you may take a look at my signature, there is a link to the pros and cons about both servers)
http://allods.com/forum/index.php?page=Thread&threadID=7017
game is very active on free server
on the subscriptionserver are much less ppl (about 5% form the population of free server it seems) which is especially a big problem regardings battlegrounds
game enjoy rate is 10/10, i use much time for this game and do not regret it at all since its so pretty and satisfying
i like that you can have everything for free theoretically (exchange gold to BC instead of using money), i like that there is a lootpet (no manual loot collection at all!!), i like there is reincarnation (start game again with a different class and lots of advantages from 1st char), i like there is automove, i like there is bloodlust (selfheal over damage attribute), i like how the chars look and act etc etc, i could expand this list a lot if you wish