well exactly i don't know can help you i work a long time with L2OFF no i work with L2J but you want add me in msn maybe we can try do it send me a PM and i send my MSN and well about differences of L2J and L2OFF....the difference is basically the following: L2J emulates the official Lineage 2, but is very unstable, has a maximum capacity of 300-800 users, then collapses. Has functions that do not have the original game.
The L2OFF supports over 3000 online users, is more stable but it consumes more resources. Has the peculiarity of having the officer's base C1. This makes updating can be done by hand and that the database will never be reset or lost. Therefore, in the course of the chronicles, the only thing that changes is the customer, and new additions bring the chronic you will incorporate into the database manually.
For a community of Lineage is successful and the server is a good base has to be L2OFF but the lag and bugs makes becomes unplayable. On the other hand behind L2OFF have a server with great GMs who have knowledge and that all modifications must be made by hand.
More on L2J (the J is for Java):
As I said before L2J could handle 300-800 people but they have to restart X every time, if there is a bug (bug) the server is crashea, if someone chooses a subset that should not and throws a skill that the server is not recognized for crashea race is the worst problem is L2j stability and playability.
L2J works in many people seemed to do the officer, but from C1 which have not fix the worst bug of L2J. remote attacks / skills / distance even if you have a stone wall, a mountain, attack pierces the enemy you have targeted.
This much aprobecha people what (but it is a big bug like a cathedral) at the time of siege, this example is 1. The clan leader said names, the other target and crush is killed without leaving the throne room of the castle.
To criticize the other is to go to TOI L2J (Tower of Insolence) 13th floor and / target Baium after lighting strike and the other party to give flechasos nonstop, low to the floor automatically Baium TOI 13 o_O
And worst of all you can do is go to the 13th floor of TOI, and from above to get buff Baium for you to split the face and putting / target buffs baium and throw + heal, 30% (the server that I will let you know a server where each pj can grasp the skills you want to) spend a lot on the PK L2J and whether these can kill you within city!
L2OFF = 100% playability, not crashea, endures 1000-4000 + days even if people do not have bugs in L2J but as I said before, its programming language is much more complex because it is not Java.