I seriously doubt that you'll find a better or realistically longer lasting 18350 battery than an AW.
Efest makes a higher mAh 18350 IMR, but my experience with both AW and Efest 14500 IMR batteries compared with each other led me to leave the Efests in a drawer, not worthy to be kept in rotation with the AW's. My guess is the same would be true with the 18350's.
RBAs in general, and especially using low ohm
vaping, will drain batteries faster than typical
juice delivery devices, especially the smaller 18350's. A better choice would have been a mod that uses the larger 18650 batteries. The AW IMR, Panasonic hybrid/IMR, and MNKE IMR batteries are better suited for RBA usage.
http://www.youtube.com/watch?v=HzN9dQWsfR8