Personally, I don't really ship either of them. Sunnyflight is really cute, but Sunny sorta rejected Starflight in the 4th book. So you must be thinking, "Well then, why don't you ship Starspeaker?" Because it is WAYYYYYYYYYYYYY underdeveloped. Like, they meet, they talk, they become friends and then BOOM shipped. Why? I'm not really against either of these ships though, I just don't ship them.