Quick and Dirty thoughts about the helmets.
Jackson:
Better head gear, simple and comfirtable and locks on the top (however) , helmet is very flimsy and more than likely will not hold up well, bad helmet shape and weight to the front ratio and because of this, the Locking feature I love so much on my jackson passive helmet does not work as good. Very large view area, which may or may not be a good thing. Auto dark part can be removed and added to the HSL-100 helmet which is WAY better than the stock helmet.
Miller:
Better helmet plastic but still flimsy, head-gear "new model" confusing and frustrating, also creeps down NO MATTER WHAT! X-mode is good but at school I have note used not once, so I can't comment. I'm not a fan of the green view (I use a jackson passive with a gold plate) but I have done some good welding with it, so this is up to the user. Auto Dark unit can only go in Digital elite model so if you don't like the helmet you are out of luck.
Over all, I'm happy to sell the Miller, I knew I made a mistake the first week of school, and could not recommend it for new students, as you wont get any use of the X-mode.
I just got the jackson so I can't comment, I am confused as to their choice of helmet as the HSL-100 is much better.