I was planning on getting the EX10, but ran across some Eneloops at Costco and am leaning towards a D10. Looking at the stats, it states the same upper limit of brightness, just shorter runtime. Is this the case? I always thought 1x AA lights would be a little less bright than 1x 123 lights. The Quark lights have much different outputs between the two. I don't necessarily need them to be the same, but am curious if they are close.