Let me describe my experience with the rMBP. Sorry this is long!
I have an 11" 2010 MacBook Air right now, and it's served me well but I'm starting a new job Monday that needs me to own an on the go computer that can edit video and photos. With that in mind, I purchased the rMBP from MacMall and it came in the mail today. It was so much money that I was getting major shopping guilt. I can afford it, but I was waffling if the money would be better served in my savings account and I should just get a lower end MBP. I had also read so many issues on this board: ghosting, screen burn in, safari smoothness, etc.
So today the rMBP came. I stared at the unopened box for 3 hours with my husband and we were debating back and forth on whether to just send it back. He finally came to the conclusion that just **** it, open it and enjoy it. I hadn't even seen the rMBP in person at the store, but I own a retina iPad so I didn't think it'd be that different.
I must say, the moment I went through the setup process, I fell in love. The clarity is astounding. I feel like my eyes are floating on clouds and aren't stressing to look at the screen.
No burn in or ghosting on my machine. Safari scrolling isn't 100% smooth but it also completely depends on the website. Some websites are better than others. Funny enough, Apple's Store website is the least smooth I've visited. But the smoothness is so overblown imo. It's not like it stutters, it's still a smooth scroll it's just a smidge slower. And even then I wish I could convey how much of a non issue it is. For me at least.
Everything else just screams. Coming from a 2010 Air, the difference is night and day. I have a 2011 iMac too with SSD and the works, but I still feel the rMBP is snappier.
I've only had a few hours with the bad boy, but I gotta say I am just immensely impressed and my buyer's remorse is completely gone. I'm excited to finally jump into editing with this bad boy. In the meantime, I'm just getting a bunch of software installed and a bunch of files transferred over.
I honestly think this is the best Mac I've ever owned.