Ultimately, who cares? Pro's - which is the OP and who these laptops are made for are not discerning between Haswell, Broadwell, and Skylake. Sure, it's in the back of their head, but they mainly buy for need. OP is coming from a 5 year old machine and makes money with his/her computer, so why is anyone suggesting a refurb was the best route? If nothing else, the faster SSD and much faster GPU counts for something. It's at least a 60% performance increase on the GPU side of things compared to the last model. Good luck with a refurb
Seriously...I know these things are pricey and sometimes omissions seem purposeful for planned obsolescence, I get it, but referring to what could be compared to what IS, is just stupid. No one should be buying these things yearly, so ultimately it's not going to make a huge difference if you're buying for your needs, as you should be.
Agreed, the purchaser will be missing out on at least 10 updates if they purchase and keep for the length of time they are hoping (5 years)