I gotta tell you guys. I've been following and re-reading different threads regarding the rMBP and I am REALLY torn about what to do. Two weeks ago today I purchased the 15" 2.7/16/512 model. Overall I like my rMBP but I can't say I'm blown away by performance mostly in regards to the UI. It stutters ever so slightly in most applications when scrolling and when going in and out of Mission Control and menus. Especially Mission Control. I'll call it lag rather than stutter because it literally looks like stop motion sometimes. Granted if I only have a couple apps open and only one browser it's not so bad but overall I think it's unforgivable for a $2799 laptop made by anyone to perform like this. This should be as silky smooth as the cMBP. With that said though, I appreciate the slim design, the heat management, the screen and the speed with which it handles tasks in Photoshop, Illustrator, Parallels and some other apps I constantly use. Browsing the web actually isn't as bad as I've read about in these forums. For the most part all three major browsers scroll well enough that it doesn't really bother me. Even on non retina powerful desktop machines browsers can stutter on occasion. I think what bothers me most is that it is what it is and will be what it is three years from now. I can't upgrade/swap the RAM, we have no idea if anyone besides OWC will start producing blade SSD drives at a more reasonable cost and better performance and we don't know what OSX will bring over the next three years. I know that if I was to return this rMBP and replace it with the cMBP I'll more or less have the same performance and maybe better. I have a brand new 512GB Samsung 840 Pro SSD and 16GB's of of Kingston HyperX 1600MHz CL9 RAM sitting right here on my desk just waiting to go into a cMBP. So what do I lose?* Retina Display Power nap Weight Cooling - maybe maybe not. It can be managed to a degree using 3rd party solutions (External) HDMI port - I may or may not use it but at some point probably would though can live without it 1 Thunderbolt port What do I gain with a cMBP? Ethernet port 1 Firewire 800 port - I have a number of Firewire 800 drives that are still quite good so it is useful to me I could return the TB to FW adapter I had to buy $30 Audio out AND in The ability to upgrade SSD as technology gets better and faster. Much bigger selection and many more options as well as less expensive than blade counterparts CD/DVD Drive - I still have uses for it - If I keep the rMBP Ill have to buy an external $40 and up for decent quality. Id probably go with a blu-ray at around $90 but thats personal choice. ~$400 difference in price between cMBP configured with my hardware and rMBP I guess thats about it. As I said earlier, not knowing what to expect from OSX I wonder at what point will the cMBP be left behind? As it stands now so far the only feature that a Retina has is power nap. Please correct me if Im wrong. But will the next version of OSX have Retina only features that I wouldnt get in a cMBP? And then the next and the next. When will the current rMBP stop getting new features? Will it be with the next version or the version after? This truly bothers me about Apple. Two years from now they could decide that iCloud will no longer be supported by non Retina MBPs. So does it make it any more risky to buy a cMBP over a rMBP? Maybe risky is the wrong word, how about less attractive? I firmly believe that having the ability of upgrading the SSD/HDD and/or replace the RAM can extend the life of a computer. As Ive stated in a couple threads Ive managed to get about 5+ years out of an HP dv6000 and its still usable. Im just looking for intelligent opinions and a decent discussion regarding the points I made above. So, what do you think?