Ended up buying a Macbook Pro.
I did use a gazelle at one of my jobs, and had fewer issues with that. In general though, I'd be extremely chary of buying system76 in the future. They're basically just rebranding generic Clevo laptops with very little value added imho. If I absolutely needed a Linux laptop I'd preferring dual-booting a Mac using rEFIt, buying a Dell XPS, or virtualizing.
I would say that I am very satisfied with S76. The 2 times I have had to contact them during the last 16 months or so have been good experiences, as well.
I've had 1 or 2 minor help request issues and they've always come through promptly.
Got mine since 2010 or 2011. It's my only machine, is used daily and regularly, and works without issues.
That touchpad though; it does acquire sentience sometimes :) [I don't care, tbh; it's something I can easily tolerate from a small retailer doing Linux-only work, versus e.g. Dell, HP, Lenovo, etc.]
Fun fact: my precision 3800 trackpad works way better on Fedora 27 than on windows 10. However, that is no match at all compared to a macbook pro.
We use XPS at work for all technical employees and only one laptop had coil wine issues, and we got it replaced.
First, all the Linux installers I tried couldn't see the SSD, like, at all. I had to disable RAID support in the BIOS (I still don't understand WTF is RAID doing there provided there's only one disk). Then, no matter how I tried, it just refused to boot from UEFI. Then, when I enabled legacy boot in the BIOS and finally managed to make it boot into the system, it hung up when switching to graphics mode, screaming that "watchdog detected a hard/soft lockup on CPU". When I finally managed to have X running, it's apparently running on the CPU, and xdriinfo says there's no direct rendering support. It took me nearly 2 days to get kind-of-but-not-really usable system. I still can't adjust screen brightness (other than in BIOS...)
The last time I had this much trouble with installing Linux was back in the nineties. But hey, the HiDPI display is indeed beautiful.
I just moved from my x230 (FHD mod, coreboot, and x220 keyboard) and the only thing I miss is the trackpoint so far.
Asking out of actual curiosity. I'm not familiar with puri.sm
Not affiliated with system76 but I do own one of their laptops.
Thought it was worth it because I was supporting a Linux-friendly company.
The laptop had constant fan noise issues and the touchpad stopped working after a year.
Now I use a fanless desktop mini pc that I found on AliExpress that has Ubuntu pre-installed. Life is much better now.