I tried the 14' MBP earlier this year and having had 13' MBPs for years, I found it to be almost identical. What I did notice was that it did get warm to the touch with what I was using it for. I decided that I would instead go 16' MBP. The screen was just too amazing to pass up on and I noticed that for the same tasks, the 16' was cooler and ran the fans less for what I was doing.
For me personally I decided to sell my iPad Pro 11 and justify the higher cost of the 16' MBP because of the screen. A month down and I don't regret it. This thing is a keeper and I absolutely love it. Yes, the larger laptop is noticeably heavier and larger to carry around but it has much better thermals and the screen makes it worth every penny for me.