It's not hugely larger to be fair, but it is thicker, and heavier. It was something that I was more aware of than oher people probably - I have a 15" as the daily workhorse and I find it too bulky to transport out of the office. It's a large footprint at home too.I didn't realize that. All the initial reviews said it was the 15" with no bezels but it appears to be about a quarter of an inch larger. Sometimes I look at the space gray and think maybe it would be more modern looking but I know if I got one I would regret not going silver.
But for sure it's not massively bigger so if you don't care about portability and footprint it makes sense!
Cheers ✌