Not that impressed with the packaged shot of the Alien Warrior; I'll have to wait to see in-hand pics (or to come across it in person). From what I can tell, the paint apps arond the teeth and mouth are on the sloppy side. This was also the case with the first Warrior they did a few years back but the quality varied from piece to piece and I managed to find one that was solid.
I might grab one or two of the brown ones if they look good enough, then get two or three of the inevitable blue ones since I prefer that color scheme.
Having that said, the Marines look FAN-FUGGIN'-TASTIC. I'm absolutely blown away by the paint, the accessory count, the articulation, and how clean they look. My LCS has increased the prices of NECA figures to $20 but I'd be willing to pay that amount for these beauties. With the exception of the Alien (but we've only seen one shot so far) this is shaping up to be an amazing line. Seeing as no other company is tackling the second movie right now, I'm ecstatic that NECA's knocking these out of the park. I really hope they put out a few 18" figures because if the 7" ones look this good, imagine what they'd look like blown-up to a larger scale.