And kai is better because everytime you reset back to the dash it shuts down,and not only do you have to log in again,you have to type all your details manually,yeah its good fun.
you have something set up wrong because i never have to retype in any login .. you must have xbmc connecting to kai so it just looks like its reseting kai on your computer when its actually just taking over the UI .. you can also load the kai config and set autologin :]
i play on kai everyday with tons of people who have headsets , of course i don't play halo2 so i dunno over there ..
also kai will let you install it without portforwarding , i've installed it on many computers/routers that just worked right away .. forwarding a port is better anyway, its always recommended ..
and the whole clan thing is kinda cool but i've seen so many "here today , gone tomorrow" clans thats its almost a waste of time ..
as far as the amount of users i think both tunnels run close to the same amount ..
really it comes down to choice, we have a choice , play on one, play on both, its all about playing online!