I agree with dr g. There really is no other option for an 18350 IMR other than the AW.
There are other 18350 IMR's on the market, but none will compare to the AW.
Running a 0.7 ohm coil you are drawing 6 amp continuous discharge rate from that AW 18350. It's CDR is rated at 6.8 amps, so you are pushing that battery to its limit with every use. No battery will last long with that kind of heavy use.
I understand the appeal of using a shorter mod, but if you are primarily using sub-ohm you should consider using your mod in 18650 mode. The following IMR and hybrid batteries all have a continuous discharge rate of over 10 amps, so you can use them at your "sweet spot" of 0.5 ohm and still have plenty of amp headroom for more safety and much longer use between charges.
AW IMR
18650 1600mah 24A
MNKE IMR
18650 1500mah 20A
Orbtronic hybrid
Orbtronic 18650 SX22 (hybrid) 2000mAh 22A
Samsung hybrid (LiNiCoMnP)
INR18650-20R 2000mah 22A
Sony
us18650vct3 (hybrid) 1600mAh 30A
Efest IMR
18650 1600mAh 30A