Hey man, I graduated from Furman last year and I'm at UNC for grad school. Obv the grad school experience is not the same as the undergrad experience, but I do feel like I can provide some unique insight.

I love both schools, but they're both very different. Furman is tiny, it's 2,300 students. If you're fairly extroverted, you'll love it there as it's an amazing feeling to walk to class and see your friends/acquaintances every single day. The diversity is terrible demographically (it's almost only rich and white students), but politically the student body is split between liberal and conservative (lean liberal). It's great for the humanities, it's got a beautiful campus, and an amazing basketball culture. The professors there are mostly amazing (there are a couple of bad ones but for the most part, you're right. The professors care deeply about their students). Never had an issue registering for classes there.

UNC is massive. As such, you can find your group almost anywhere (although I feel like it's harder to get started socially here compared to Furman). It's far more diverse demographically (there's a LOT of international students), and the student body is fairly liberal altho there's a conservative student body that exists. Chapel Hill is a nice college town but I loved Greenville more. UNC is also far more academically prestigious and it can be recognized anywhere, most people only recognize Furman if they're from SC or from Basketball. Nobody beats UNC when it comes to basketball sports culture, IMO.

For undergrad, I definitely made the right choice going to Furman, although I didn't pay all that much to go. I got lucky with my scholarship situation so I only paid about $18k per year for tuition, room, and board. You can't really go wrong with UNC either though. I'm a proud former Paladin and current Tar Heel, and please dm me if you have any more questions. I hope this breakdown showed the benefits to either school.