i just received my vision yesterday right before leaving my house to help a friend move some furniture to his cabin.
so i handed him my H501w, and i tried out the vision.

after about 20 minutes, i started to feel its weight, its not heavy, but heavier than i would like for a headlamp.
it is pretty comfortable to wear on the head though. it being lighter would make it more so though.
the beam is very acceptable. on a white wall i notice its imperfections, but during use the beam works very well. it a flood beam with a little intensity.
tint is just a tad warmer than my h501w. more of a rosy hue when compared.
the control ring on mine is a bit stiff. when turning it while wearing the headlamp, i had to use both hands. 1 hand to turn, and the other to hold down the battery compartment. i am able to just use 1 hand to operate, but it requires me to push the headlamp against my head to help hold it down, but its somewhat of a clumsy way of doing it.
will the control ring get easier to turn with more use?
EDIT: my vision started to make squeaky noises, i used a tiny drop of hoppe's lubricating oil in the control ring, and it fixed everything. the control ring now turns much easier and smoother, and no more squeaks.
i used the vision on max output for at least 20 minutes. it felt just a tiny bit warm. :twothumbs i would feel very comfortable using it on max until the battery drained.
build construction is solid. quality plastic, and precisely made. definitely gives me peace of mind. enough to even order it from a certain auction site because our cpf dealers dont have it in stock. surefires warranty and backing also gave me the courage to order from a seller thats unknown to me.
like Prooftech said, the LED looks very much like a XR-E.
just some of my first impressions and observations.