Hands down,,, the Arc AA is ALOT more "usable"
I am surprised how much light my AA puts out every time I use it.
In total darkness, its alot of great light.
The X1 is ,,,, well, in my eyes, a nolvalty item.
It has NOOOOOO spill light what so ever.
Cant even use it to read a map, unless you want a bright 1" diameter dot on your map. /ubbthreads/images/graemlins/smile.gif
Its a fun light, but to USE,,, the AA is great.