Sure, there is always a reason. Capacity being #1. SubTank fits and looks decent on many slightly larger
mods and Box Mods.
Hopefully having 3 choices and the clone market will drive pricing down. Seems like China is starting to ask US pricing on many newly introduced items leaving little margin for economic shopping.
Hoping for a Deal on the Nano as it is likely the only one that will sit fully on top of a Cloupor Mini. Heads should be simple enough to rebuild.