[T-Mobile LG G2x] gohawks1:
I just got my G2X in the mail last night and spent the entire evening getting it all setup. Since last July I've been a Samsung Vibrant user, running Team Whiskey ROMS, the latest being Bionix 1.3.1.

Now that I've got everything setup I've found a lot of things I like about the G2X and a lot of things I think the Vibrant was better at. Here is a list of pros and cons, compared to the Vibrant

Pros:

Speed. This phone is fast, apps load way faster than they ever did on the Vibrant

GPS. This thing is rock solid for me. It locks quickly, and accurately, I was even able to get a lock sitting in the middle of my house, I was never able to do that with the Vibrant.

WiFi Calling. So far it seems to work pretty well with minimal battery drain. All the versions for the Vibrant sucked my battery dry.

Feel. I like the weight and solid feel of the G2X over the cheap plastic feeling of the Vibrant.

Lack of Bloatware. It's nice having a clean Android image (though mine was nice and clean on the Vibrant due to Bionix).

Screen Color Temp. I like the warmer white balance on this screen vs. the colder (blue) white balance of the Samsung AMOLED screen.

Cons:

Screen. The LCD screen just can't compare to the AMOLED screen, the blacks are so much better on AMOLED and the colors seem crisper.

Backlight Bleeding. This really is part of the screen but it's a defect so I listed it separately. It really makes the blacks looked washed out in the corners when you have something dark on the screen, in a dark environment.

Missing a few of the Samsung tweaks. This is pretty minor but they are things I got used to having. i.e. the quick settings to turn on/off things like WiFi, Bluetooth, GPS etc.. from the drop down notification bar (there are 3rd party tools to do this so not a huge deal), the ability to adjust brightness by sliding your finger left or right on the notification bar (I just use a widget now), the way Samsung integrated Facebook info into your contacts was more complete. i.e. with my Vibrant if I synced facebook my contact pictures showed the facebook profile pic everywhere. With the G2X I didn't get facebook integration until I installed the facebook app, and then the integration only shows up in the phone's address book. For example, I use Launcher Pro Plus and it's widgets. On the People widget on my Vibrant the contact pictures were facebook picturs, on the G2X I dont' see them and there appears to be no way to get them there. Another thing I liked about the Vibrant was the fact that the corporate e-mail app allowed me to set peak and off peak schedules, I can't do that with the G2X e-mail app.

Signal Strength. This is a huge deal right now, something I hope will be fixed when Team Whiskey gets their ROM going. Inside my house I have very spotting 2G and 3G/4G service. It's bad enough that a few years ago I installed a signal booster for 2G networks. I found with my 2GX that I have many places in my house that would completely lose connectivity with 2G and 4G, with my Vibrant this never happened in 2G only mode (due to the booster). This morning I picked a point in the middle of my house and tested both the 2GX and the Vibrant and found across the board my signal strength was better. G2X, 2G average = -104dBm, 4G average = -112dBm. Vibrant, 2G average = -100dBm, 3G average = -102dBm. I know the numbers aren't all that different but the results are. With the Vibrant I never lose signal in 2G mode, with the G2X I frequently do. With both the Vibrant and the G2X I lose signal in 3G/4G mode. I also noticed that my signal strength on my G2X dropped when I enable WiFi. I need to test this more but I've never noticed this on my Vibrant.

I can't put battery life into either category yet because I haven't had enough time to really put it through it's paces. I did get SuperPower configured last night though and in Sleep mode it seemed to drain the battery at the same pace as it did on the Vibrant so that is a good sign. I'm really going to be watching WiFi calling carefully because it looks like I may have to rely on that when I'm at home.

Oh, and not really a pro or con but for those of you on the fence on whether or not to put a case on this phone. I really like the 'naked' look of the phone but I found it to be a bit slick in my hands and due to the screen running right to the edge I found myself launching apps that are on the sides of the screen because simply gripping the phone touches the screen. A case will take care of both of those issues.

Hopefully this quick first impressions is valuable to people thinking about ordering this phone.