I've been a pretty vocal supporter on these forums of the MBP Retina. I migrated from a less-than-one-year-old 17" MBP. I was nervous about losing the screen real estate of the 17", but within two weeks I'd boxed up my 17" and sent it on it's way. I'm VERY happy with the MBPr. The past two weeks, though, have exposed a weakness. It's a minor one, but aggravating. I've just returned from leading a cloud deployment at a northern California software company. In order to have access to the appropriate network, the team needed to use Ethernet. No problem. I have not one, but two Thunderbolt to GigE adapters. Speed was plenty fast, but there was a problem. With several folks using the team room's Ethernet drops on their laptops, the cables would get moved around as people located a free cable and strung it to their workspace. Several times this resulted in my Thunderbolt to GigE adapter becoming unplugged from my MBPr. Thunderbolt uses a non-locking friction fit connector. It's fairly easy to unplug it with relatively minor tugging on the Cat6 cable. Since I was maintaining several ssh sessions, several RDP sessions, a VSphere client session and a Remedy User Tool session into the customer's cloud orchestration stack, this was a genuine hassle. I'm still a huge fan of the MBPr, but some sort of locking connector for the Ethernet connection (like an RJ45???) would be a huge improvement to my workday.