Probably Warsong, I think there were some space shenanigans in that.
Endsong was all Earth based, and just about the Phoenix Force trying to find a new host, or something. It featured Emma, Scott, the Cuckoos and that kid from Morrison's New X-Men, Quentin Quire. And Wolverine, of course. It ended with Jean realising that all the X-Men loved her, so she could rest in peace.