I have had big friend groups and few friends I talk to separately, I personally find big groups appealing to me a person who struggles with socialising as if one of us can't continue the conversation another could try to help and pick it up again, that probably sounds wrong sorry, though there are times where individual talk is nice, my best friend is someone I mostly talk to individually because our previous friend group where we met each other is sort of falling apart (We're still somewhat together just missing a few people because of an argument but it's still not really the same), and we don't really share many other servers or places that we both talk in a lot
And I currently have what I consider a big friend group, it's a couple members in a Sk8 the Infinity server, about 8+ people including myself, we vc every day and talk about literally everything other than Sk8 it seems
While it's hard to pick as both have their pros and cons, and there were a few down times where I had neither or only one of those and wished I had one or the other (why is my social life a literal rollercoaster), I think I prefer closer friends and individual talk, since we're comfortable enough with each other if it's reached that point