D1 in conferences with some chatter going on. You can talk about current games, recruiting, basically anything because you are involved in one aspect or another all season.
D2 is where my Alma mater is and I like the conference mates there too. Only thing is recruiting talk waits mostly to session 2 or your bragging on a guy might get him snatched away by a D1 reading your conference chat (my big mouth trying to get some chatter going paid that price).
IMO if you get in a conference with some people that will chat with you, plan to stay, and willing to help it is the best situation.