I purchased a System76 Serval laptop about half a year ago. Not only has "Support" from the company - primarily thomasaaron - phenomenal, the System76 community in this forum is remarkably polite, patient, and wonderful to newer Linux users.
Every question I've posted in the "regular" Ubuntu forums has comes back with answers so far off the mark I hesitate posting there. Every question I've asked here has been answered promptly, correctly, and at a level I can use. This applies to questions specific to my system as well as general Linux questions.
I had many of the same questions when I first considered a System76 computer. I made my decision to purchase one on the tone and quality of these forums, particularly the voluminous support offered by Mr. Aaron. I have never regretted either the laptop or the community.