The newbie blues for each private tracker are a definite thing, but once you get past that it's great. It also depends on which trackers you're on: the general trackers tend to have similar content as publics, but it's the specialty and niche trackers where privates really shine.
Do they forbid sharing the content, or do they forbid sharing the torrents? If it's just the torrents, you can just create a public torrent with a different piece size and cross seed.
Do you prefer private or public trackers?
As I get more and more invites to private trackers, I’m finding that I find myself spending more and more time on public tracker websites....