So we can start from these, after who know can add more details:
ABSOLUTELY ----> NO LAG
Amazing very fast execution skills!!
No DC
No QUEUE
Very fast developers/staff
l2store prices ridicoulus lowers than Ncwest (for example, pass stronghold 0,50cents only and more&more)
No need convert ncoin, you buy directly in EUR.
l2store has many stuff that are missing into the game while in Ncwest ur'e forced obtain only from events (with all conseguences of the chase).
Mats to upgrade broochs, packets to obtains jewels and copound.
Very fast staff/developers
Economy server really sweety, a really a lot of stuff in selling at not insane prices like to buy a Ferrari, a lot of dragons weapons since last event they did.
No scams events very expensive like we need be Bill Gates or similars for only a restricted group of persons with $$$$$
Customers are listened
Ofcourse u can equip more ur chars with not big moneys, game calibrating now is more hard but most of ppl can be in Greats Gears and enjoy LVL UP fastest. So almost BALANCED.
can login only 1 account, if u buy "premium" u can log 2.
who is afk in town without sell shop after a "x" time will logout from the server.
who is dead in exp after a "x" time will logout from the server.