I'm not thinking in terms of specific apps rather the ergonomics of the large device.
The base on the 15.4 looks very big to use say on your lap even if the weight is the same as the 13.3 model ?
My only hesitation on the 15.4 Retina is the large size of the laptop.
If you were able to get one, how are you finding the size in actual use...
I've owned both a 13" and a 15" and yes, the 15" is bigger in your lap. However I don't think its too big, in fact its easier to read the text (with my eyes) with a 15" MBP then a 13"The base on the 15.4 looks very big to use say on your lap even if the weight is the same as the 13.3 model ?
"Too big" for what exactly? It depends heavily on how you plan on using it.
A 13 inch is more portable, but I find the screen to small for my endless hours browsing and typing documents in Office.
The 15.4 retina is heavier, but it doesn't cause ME any problems in portability and I have no problem lugging it around.
Some people claim the same with the 17", and for ME there is no way I could lug one of those around.
I've owned both a 13" and a 15" and yes, the 15" is bigger in your lap. However I don't think its too big, in fact its easier to read the text (with my eyes) with a 15" MBP then a 13"
The 15" RMBP is lighter than the 13".. (.04pounds, but lighter)
I would buy a 14-inch Retina MacBook Pro.