Hello!
Great to see that you'll be looking into getting a new pc soon.
tallyhogames :
"I’ve only ever used intel chips so am unfamiliar with AMD. Are there any issue with Windows 10 which Intel chips don’t have?"
Currently, it's the other way around.
In recent news a vulnerability in practically all manufacturers' CPUs is hitting intel a little
harder than others (Look into Spectre and meltdown --
https://www.theverge.com/2018/1/10/16871856/intel-cpu-meltdown-spectre-response-computer-slow-down-issues )
The first patches intel had released had the unintended effect of taking many windows' computers down. The second round of fixes should be around soon and working. (https://www.theverge.com/2018/1/29/16944326/microsoft-spectre-processor-bug-emergency-windows-update-reboot-fix)
Will this be "permanently" fixed in the hardware? Short answer,
yes. Most likely in 2019 (intel says later this year, AMD says next year). It will still mean getting a new CPU for that.
tallyhogames :
As far as upgrading goes, If I was to get a 1700X now are the motherboards capable of taking future CPUs or is the existing boards at the end of their lifecycle?
zoltan.boese :
AMD claims not to change their processor socket until 2020. There is a reddit thread on the topic: https://www.reddit.com/r/Amd/comments/6xlbcv/how_long_will_amd_be_using_am4_socket/
Driver availability and software optimization has improved.
Intel announced it´s lga1551 socket in 2015, I would not trust them to keep it for long.
I will concur with zoltan.boese on this and also mention that Intel is finicky on their socket support, just look at LGA1366... Talk about future proofing.
In my experience AMD does tend to stick with their sockets and maintain compatibility for upgrades. The only major changes are in new chipsets and features that usually come with newer motherboards, but it's not something that will break the deal for many I.M.O.
tallyhogames :
Do board designed for intel chips have any advantages over their AMD equivilents?
Dosflores mentioned some features that are on some motherboards that may prove useful, just remember to find what suits your needs best before you make a decision.
Current pricing for video cards and system memory are quite high a.t.m., we may blame crypto-miners for that so if you want to buy a pre-assembled pc that may not break the bank then this will be an interesting article to get you started, it does cover AMD based pc's as well as Intel built rigs:
https://www.pcworld.com/article/3253304/computers/best-gaming-pc-deals.html
Hope this helps.