Ahhhh yes xlink kai. Yeah I use it and hate it. The weak point of xlink kai is that all of your traffic is sent to a server before it is sent to the other players in your game. This equals massive lag and disconnects.
The further away you are from your friends the worse it gets.
Sometimes it disconnects for no other reason.
On top of that the main rooms are full of noobs begging for help like they cannot read a tutorial.
With xbslink all of these problems are gone, no servers and random disconnects, no retards in the room harassing and begging for help.
This is all IMO of course.
Your mileage may vary.
F.T.F.S.I.= Failure To Follow Simple Instructions
Google is your friend.
Try using the search function instead of littering the message boards with questions that have been answered 10+ times.