Okay so I've currently got a 15" MBPr and a 11" MBA and I'll probably end up getting Rid of the MBA over an oversea trip I'm completing soon.
Work pay for my laptops every few years and I'm due for one soon (a month or so).
I don't want to get a Windows laptop because the trackpads are horrible and I'm always using my laptop on my lap or while I'm carrying my laptop round or in places where there's no room for mice.
Anyways I like the MBPr for the screen space (resolution) and the 16GB of RAM but the MBA for how compact it is. I carry my laptop around everywhere (everywhere) and I'm leaning towards a MBPr but I'm wondering if it's going too heavy.... I currently carry my 15" MBPr everywhere is and it's massively heavy.
1.57 vs 1.35kg hmmmmm.....
Wouldn't think that a retina would be heavy, but you're lucky about the fact that it's lighter than most Windows laptops in general. But as far as when you can get the Macbook, next month may be the conference for Apple and hopefully they do announce the performance enhancements. So personally, I'd wait til then. But because this is work related, you probably just care about what gets done and any current MPBr can handle your needs. Heck, a 13" may be suitable if weight is a problem.
If you're worried about carrying the laptop, I recommend getting a backpack (for example if you haven't already have something to carry it with) meant for carrying books and the Macbook specifically, either at the Apple store or on Amazon (where the same item may hopefully be found for cheaper).