i got my rMBP and everything was perfect, if it is not to your standards you can always return it..
I concur... Just got mine a few days ago, it is an LG and it is the most wonderful display I have ever seen. In fact, it is sharper than reality. My 2.6 15" rMBP is so fine that it brings me sweet fruits and nuts from the Orient for me to enjoy at mine leisure.