Last week I bought myself one of these magnificent machines.
I have been debating and waiting to get one of these for some time. Last week I finally did the deed and handed over a large sum to Apple for a 13″ Retina MacBook Pro with 8GB of RAM and 512GB of SSD storage. [Full spec here.]
One of the things that is making the big difference is the speed of I/O thanks to the SSD. That and the closing of the lid sends it to immediate sleep and it wakes just as quickly. I have never experienced such speed or certainty from any Windows PC/Laptop I have owned.
I have the full Microsoft Office for Mac 2011 on it (bought on an Employee Purchase for £10 when I worked in Wipro) and I also run VMware Fusion 6 which enables me to run Windows 7 (with the full Microsoft Office 2013 from another Employee Purchase scheme) when I need to do those oh-so-vital things when the only thing that supports that particular business application is a Windows environment. Needless to say I can do 98% of things that I need to do just fine on Mac OS X.
In speaking of VMware Fusion I must also talk about the fact that I tried Parallels. There was not, to my mind, a great deal of difference between the capabilities that I require on a day-to-day basis and as I was a Fusion 4 owner I could upgrade to VMware Fusion 6 for a lot less than buying a new Parallels Desktop 9 for Mac.
In short the MacBook is superb and I can only suggest that anyone else should not debate for as long as I did and just get one. If you are in doubt then consider that you have a 14-day grace period to try the Mac and if not satisfied, and provided you have not broken it, you can return it to Apple for a full refund!