Droid DNA vs. Droid Razr Maxx HD

I am up for renewal and I don't know what to get. I love the specs of the dna but battery may be an issue. 16gb really isn't an issue as I am using the cloud almost to the full extent.

With Google Now and other location based apps having the GPS on pretty much all the time would be nice. I guess my question is how does the dna fair with gps being on the whole time vs the razr maxx hd? Also as an addition to that question, how is Google Now on the road? so far my only experience with google now is on the Nexus 7 but it seems as though if I were on the go, letting it have access to my exact location may make the experience better.