If it's the same ad, at the start of it in the Bay Area and maybe the rest of California, they're advertising the Nexo ahead of the others.
Guy [I have lots of experience designing/selling off-grid AE systems, some using EVs but don't own one. Local trips are by foot, bike and/or rapid transit].
The 'best' is the enemy of 'good enough'. Copper shot, not Silver bullets.