Haven't had trouble with GPS.
Compared it to a Nexus S side by side, same screen as the Charge. I've seen a lot of the Samsung Vibrant as well. Don't get me wrong, Samsung makes great phones, great screens, but you didn't compare the screen to a Samsung, you compared it to an OG Droid, and even went a step further in saying the OG has a better screen. To that i have to laugh because i came from an OG and it's not even close.
I did hold a Charge and a Thunderbolt. Played with a thunderbolt shortly after it came out. It's just a cdma/lte Mytouch 4g imo. Ruled that out pretty quick. The Charge felt quite a bit less sturdy to me than the Revolution. It's almost the exact same UI, except it's got Google apps instead of bing apps. I just downloaded all the Google apps from the market on the Revo. The search button thing will be fixed pretty soon i'm 100% sure. All bing apps will go away w/ root explorer when i root tomorrow. Quadrant isn't the end all be all, but the Charge also go pretty sad scores. The revo doubles them stock for stock. Again, that will change with root, roms, kernels, etc but your whole thread has been about stock.
Like i said, to each their own. Maybe you got a faulty one, it happens.