[T-Mobile LG G2x] mobilehavoc:
Got mine this afternoon and I'm coming from a Verizon Incredible running CyanogenMod 7 so I have quite a lot of Android experience and I've seen the latest stuff (gingerbread). I also have a XOOM.

So I got my G2X and here are my impressions:

++ Screen is just WOW. Coming from AMOLED I was not expecting much but it really blew me away - it's almost too bright from what I'm used to. Outdoors it is super easy to read which is a big plus from an AMOLED. Would have been perfect with qHD but the current resolution is good enough for me

++ Build quality is superb. Very solid in hand, no creaks or cheap feeling parts. Back feels good and side is great. Mine came with a nice screen protector already on the screen so I'm leaving it on for now. It seems pretty high quality. I love the weight/feel of it though.

++ Speaker on the bottom. Sounds OK...the notifications/ringtones are super loud but the music didn't seem as loud? Not a big deal. It sounds better than when the speaker is in the back like the Inc.

++ WiFi is mind blowing fast. I get 30mbps/15mbps on my N Wifi. Thats as fast as an iPad2 and XOOM and a little slower than an i7 Macbook Pro!! This thing is balls out fast on WiFi if you have N. Worth getting an N router if you don't!

++ Cell signal seems good although it seems slow to pickup/switch from WiFi to 3G, etc. Haven't used it enough to make a judgement on this. Speed outdoors with full bars and 4G showing is just so-so...about 1.5mbps down and 1.5mbps up. But then again I'm in NYC area so too many people probably.

++ Speed - this thing is a beast. 2500+ in quadrant stock and just very speedy in using apps. The browser seems responsive and flash seems very smooth in general. Downloads (see wifi speed up) from Market and installs are blindingly fast.

++ No crapware!! Only stuff is TMobile apps which are reasonable like myAccount and mydevice, etc. I can live with that. The games they put on are pretty awesome (Nova and NFS is a good start).

++ Wifi Calling - never had before and I think it's awesome. Seems to work quite well. When on, the cell signal bars go to zero so I'm guessing it turns off the cell radio? is this true? If so that'd be good.

++ Boot time is kind of ridiculously fast - about 10-15 seconds on average from cold start.

-- Stock Froyo launcher is mehh. Was fun for a bit but then I couldn't stand the 5 screens and lack of functionality. I ended up sticking launcher pro on it and so far it's good although LP is smooth/fast it's still laggy at times which is odd. On the bright side, I can run the Nexus Live wallpaper and it seems to have no impact on overall performance

-- I miss Gingerbread more than I thought. Mainly text selection is none existent in Froyo and it's annoying to say the least

-- Car Home that comes with the G2X is old and crappy. You can't install the new one from Market because it's not marked as compatible. I was able to BT the file over from my Incredible and luckily it installed fine and seems to work.

I haven't had a chance to play with the cameras yet and haven't had a chance to test the battery either so will post back if there's any surprises on those.

Overall I'm very happy so far. I'm going to try it out for a week or two and then if I still love it, port over my Verizon #. Any questions?

See my post further down!!! There are 2 items that may be issues for people!!