Atrix. The 1gb of ram for me is better than the better camera on the bionic. I don't us the camera that often anyways.
I heard that the 512 ddr2 On bionic is better then the regular 1 gig on atrix . Also 5 or 8 megapixel on a camera means almost nothing. My evo has 8 but my nexus 1 blew it away with 5
Doesn't the Atrix have DDR2 memory as well? I also agree, MP doesn't really mean much when it comes to taking photos, it all depends on the optics.
Atrix has DDR2.......it would just be silly to put DDR in it.
Besides, half the ram might save a noticeable amount of power.
The atrix is a better device just because it packs more features than the bionic plus given the fact it wont be hampered by VZW slow 3g network I would choose the atrix in without a second thought.
Keep in mind that the Bionic is a 4G (LTE) phone, and therefore not limited by Verizon's slow 3G network if you happen to live in one of the 30+ markets with LTE services available.