Anyone here get a rMBP and is happy with it so much, that they are no longer considering getting a 2012 iMac? If yes, why? What about the rMBP makes it a valid iMac replacement for you? Just want some opinions that's all 
I swear I'm on the brink of getting a rMBP! If Apple doesn't release the new iMac by October, then it would be safe to assume at that point that we will not see a 2012 iMac, even though current speculation points to otherwise. We shall see but more the time that elapses, the more the 2012 iMac eludes us.
I would wait through most of October too. There's suppose to be another event in that month.
rMBP > iMac
Unless screen size is important to you. The rMBP has better screen resolution. Portability is a bonus.
RMBP is a portable iMac for me. I'll plug the RMBP or MBA into a TBD when I want an "iMac" feel. Portability makes it easier to sell locally should I decide later one I want to upgrade.
I can't roll my eyes hard enough. With the gimp'd specs, you would be more accurate in saying its a portable mac mini.
I really would like to advantage of the BTS promotion before it ends, and this is what is weighing me heavily toward getting the rMBP because I doubt the iMacs will be released prior to this. The rMBPs are really beautiful machines and very powerful and best current Apple machines, but I also feel as if I would regret not waiting for the 2012 iMac. I'll tell you one thing, if I did get a rMBP, then I'll definitely kiss the iMac goodbye and not look back. Apple is comfortable resting on their laurels while their supporters are left in waiting and torment.
It depends on how much you need a new comp I guess. I needly one badly, my life/work were suffering. I am so disgusted at how long I waited. If your comp is really unbearable I would just start financially planning around a rMBP, to at least order one before the back to school sale ends. You have 14 days starting at its delivery date to return it. If you order one on Sept. 21, depending on your location it will arrive in 1 week. So roughly speaking that means you have until Oct. 12 for new iMacs to come out in order to exchange for one, granted that you will lose some money buying accessories and so forth for rMBP. That puts you in a better position than me (Sept. 28), but honestly I don't care at all, the word "iMac" makes me cringe at this point.
OR.. unless computer power and display *quality* is more important to you?
The iMac is better everything than the retina MBP. Except, well, USB 3.
As I understand it, comparing the top 2011 27" iMac to the rMBP, the Geekbench is extremely close and the 3DMark11 favors the iMac by quite a bit. Of course the SSD will improve perceived performance (it's hard to get that to show up on these benches), but you can put an SSD in an iMac as well.
The rMBP IS a damn fine machine. Just not what I'm looking for.
Computing power? rMBP thumps the base iMac (which I'm assuming this is based on), but for higher end iMacs, it gets more even. The most expensive iMac is obviously going to be better performance than the 13" rMBP.
Display quality? I've found that the retina display on the 15" has better contrast and deeper blacks than any other Mac display.