Hey Fernando,
I've been very happy with it so far.
On my first ride with it I didn't check the latches carefully enough and I rode with it un-latched; lid stayed closed and nothing flew out!
I have dropped the bike a few times in sand and mud and jungle and it has stayed in place; no damage.
I have got used to the wind factor and it's influence on the centre of gravity of the overall setup.
I also lined it with some thin rubber matting as a few things got bashed with all the vibrations.
Hope that helps!

__________________
On my 4th XT!