[LG Optimus 2x] jay_zhead:
I'm also on the fence about which of those two to trade up my N1 for. I must say both have their strong points, so eventually I think it will be down to personal preference and the feel of the devices. Though I'm waiting for some properly good hands on video reviews of the final retail versions before I make up my mind, I'm currently leaning towards the LG.

Here is the laydown, as I can see it:

Screen: this is a preference tossup of the higher res of the moto vs the higher quality of LG's IPS. I personally would prefer the lower-res IPS here: I've never really felt like the WVGA resolution of my nexus is not enough, everything is readable and crisp enough for me. And after the AMOLED of the nexus it would suck to go to moto's regular LCD, especially as moto devices are known for bland and colorless screens (see Droid (Milestone), etc). For me, this one is in LG's favor, but someone else for whom a higher resolution is a must might think otherwise.

Power: Same processor, so I guess it will be up to the optimization of the system by the manufacturer. Can't really decide on that until we have quadrant scores of the final products on the same platform (android version).

RAM: The moto clearly wins this one, unless LG decide at the last moment to stuff the EU/US retail version with a gig of ram. But while the moto needs it (for it's via-dock desktop-like functionality) the 2X doesn't really, so far I've never felt my nexus' 512 ram is not enough. But I must stress it doesn't need it yet - you never know what ram-hungry apps the future might bring.

Media: LG, definitely. Gorgeous music player, wide support for video formats out of the box, better camera... This one is a no brainer.

Build: On the face of it, from the video materials currently available, the LG seems like it feels more like a quality product. I might be wrong - but it seems that way to me, and to the current reviewers too. Since build and feel doesn't really affect the functionality of the device, for some people it is important, for others it is not. I must say though that I'm with the first bunch. For all their great hardware features, I was put off Samsung's Galaxy S line because of their cheap plasticky feel. So for me it's LG again. The Atrix looks cheap in comparison.

Expandability: This one goes to the moto. I don't think there was ever a smartphone with such interesting dock options. While the laptop dock doesn't seem like anything more than a cool gimmick (if you're carrying something that big and heavy with you, then you might as well just take a real laptop!), that HD dock looks like a great accessory for those who have HDMI-capable TV's at home, it'll be a godsend to do some quick web-browsing on the couch in the living room.

UI: LG's UI looks a bit silly, and I would have preferred them going with stock gingerbread, but then again it doesn't go deep, and seems to be just a launcher, which can be easily replaced by simply installing a different one. On the other hand, with the Atrix we have the mind-numbingly awful motoblur. Why?.. why did moto have to go and ruin another good device with that hateful overlay? It is about as aesthetically pleasing as a genital wart (LG's launcher and colorful clockwidget actually looks great in comparison) and as useful as a snowblower in Zimbabwe, and that does go deep, so you can't just get rid of it, it's intrusive and binding. That is a major downside to the moto, at least for me (I've heard that there are some weird people around that actually like motoblur, but never actually met any).

From what I've seen so far, it'll have to be the LG for me. But that is due to personal preference, really. I have no use for the Atrix's docks, as the laptop dock is silly, and while the HD dock is great for most, it is of no use for me as I do not have a TV (I believe them to be a colossal waste of time and braincells :p). Also, I really don't see myself ever using that thumb scanner (I have one on my laptop and I don't use that one either). The better colors of the screen knocks out the better resolution for me, and I'm big on media, so it's the LG again, and I like the quality feel of it better too. But the real knockout IMO is the absence of the evil motoblur on the LG, that just tips the scale very firmly in the korean contender's favor for me.