I found this thread very long and helpful. I was planning on originally buying the white iPhone 4 since I always preferred white but when I found out the white was delayed, I started playing the waiting game. Eventually I got sick of waiting and tired of my 3G being so slow and boring, so I walked into Apple and bought the iP4 on Aug, 26th. I've been loving it ever since.
Now comes the help of this thread to my story. I saw that the OP's phone looked great and oem compared to all the knock off's and what not, so I checked out iResQ. I saw that the white back plate was on sale for $89 so I jumped on it quickly. I placed my order on the 5th, it shipped on the 7th and then I patiently waited for it to arrive on the 9th. UPS came and knocked on my door, asked for my signature and handed me my package. It was greatly packaged in padding and bubble wrap. And it really was a great part. I had switched out the back plates in under 2 minutes, quick and easy. And started to enjoy my white iP4. This is mine (when it still had on the plastic protector on from iResQ).
I then examined it and noticed that the camera lens was not flush with the plate. I also had white out pictures due to the flash which didn't bother me since I rarely use the flash. I didn't make a huge deal about it, but whenever I held it and felt it, it really started to bug me over time (camera lens, not flash). So i gave iResQ a call up and they were gladly able to exchange mine for a new one free of charge (except shipping charges back to them). I shipped it off on the 16th via 2nd day air, and they received it on the 20th (weekend). The very NEXT day (21st) I heard a knock on the door by UPS and received my package from iResQ with my new perfect white back plate. I didn't even have white out pictures from the flash anymore, besides a small portion in the bottom corner. Which made it even more perfect!
This picture was taken in a pitch black bathroom, you can BARELY see the flash problem in the bottom left corner
Picture of my phone taken by my roommates iP4.
Both back plates side by side taken by my momentarily backless iP4.
I figured I would give you guys my review and opinion on what you should do about replacing your back plate with a white one. I say you go with iResQ! You get what you pay for, no joke. People have come up to me asking if it's the real white iP4. I've been very happy and pleased with my white iP4 thanks to iResQ and their great customer service and quick emails along with shipping.
I'm sorry for the long read and big pictures, but I wanted to be as helpful as possible! Mods don't get mad please. Thanks for reading.
PS: I just ordered my free Incase Snap-Clear case from Apple so I can show it off! I'll post pictures with it on as soon as I get it!