I think there's a pattern here.
Atomic wins it, hands down.
Add in Aqualung's apparent financial troubles, and it's a slam dunk.
That said, the Legend is an excellent first stage.
The second stage is average, IMO. It collects grit between the adjustment knob and the Venturi lever. Gritty after a few shore dives.
But it's worth getting the Atomic sealed, notwithstanding the naysayers here on Scubaboard, because you don't have to soak your first stage after a dive trip to get the salt and sand out of the inside of the first stage. Second stages get soaked overnight, of course, but that's easy.