[iMore.com]

13-inch vs. 15-inch, Touch Bar vs. non-Touch Bar, 2016 vs. 2015 — how do you choose the perfect MacBook Pro for you?

Full story from the iMore Blog...

[agnxm]

Personally, I'd choose the 15-inch one. I love all the updates about the new macbook, so I'd for sure get that one. I just think for me the 13-inch wouldnt be enough

[dexterouz]

For me money is the issue and also, I do not have anything Type-C So, 2016 is out of the picture.
For me, it will be 2015 with slashed prices

About the display size. I am using 2011 17 inch MBP and it's slowing down. It has 1920x1200 resolution same as my monitor. So, even 13-inch MBP will be good for me and it has much higher resolution. If I want I can buy a separate 4K monitor,

With 2015 MBP 15-inch starting model, I believe we have 8GB option. So if the difference is not that significant between 13-inch and 15-inch, I will go for 13-inch.