Here are my quick initial thoughts...
Screen- The screen is nice, reminds me of the Nexus 6 screen where the colors are subtle and nice at the same time. Of course not better than the top tier devices such as the Galaxy series but still nice and crisp for its market.
Build- The build of the device is solid, there is no creaking and the rear rubberized material feel good to the touch. Feels 10x better in hand than the Nexus 6. I thought it was just a tad bit smaller than the Nexus 6 but when you actually get the device in hand, it seems way smaller than the N6. I think that has to do with the great job that Motorola has done with the minimized bezels. One thing that I have noticed when setting the device up is that it gets very warm in your hands. That has been reported now around the forum sites and its indeed true. Nothing that a software update can't handle I think.
Camera- I know this is the main thing that everyone wants to know. Since I am at work I cant take great pictures of anything since I'm sitting in this boring cube but I have snapped a few pics of my bottled water and little things like that to test the depth of feel and detail and right not its seems very good. I also took a quick video of me walking around my office and the video quality does seem pretty good as well with good stabilization. I will take some more detailed pics when I get home and might make a album to post them. There is no camera lag and the shutter speed is very quick. I think this camera will be great and possibly even better once some software updates roll out.
Charging- Out the box it had 44% and I have been setting it up and playing with it since 2pm and it has drained all the way down to 5%. I plugged the charger in and all I can say is WOW. I swear this thing went from 5% to 25% in a matter of a few minutes. As of right now it reads 42mins until full and that reading was when the device was plugged in at 5%. I believe this def is the quickest charger out. Even though the cord doesn't separate from the plug, it doesn't matter to me really. The charger cable also is very lengthy and not short like some cables.
OS- I mean its close to stock as you can get so what do you expect! Smooth and I have no ran into any hiccups so far with me just browsing around and setting the device up. I did a quick test to see how the 3GB of RAM performed and I was able to get 9 apps that running in the background before it finally refreshed, I say that works for me.
Speakers- I have not had the chance to test the front facing speakers yet but i did turn them up quickly on some music and they seem to act just like any other front facing speakers. Nice and loud. I will report back on that once I get home and put the speakers to the test.
These are just some quick impressions that I have ran across since I have been setting up the device. There is more to come as this will become my main device after tomorrow until the iPhone 6S Plus arrives in house after this preorder tonight. If there is anything else you guys want to know just let me know and I will be glad to look into it.