Good logos usually fit in a square or circle. That phoenix almost does (except for his head that sticks out a bit too much). We could have 2 variants of the logo, a big one with text (like the ones shown here), and a smaller one that would be a square / round icon only (with just the "F" inside, like the old logo).
Anyway, v2 has a better font that is reminiscent of the old logo, but v1 was cleaner / less noisy.