On behalf of my friends, I'd probably say Skadge, lol. When a friend jokingly quipped he was getting his 3rd Skadge, another then stated that's "just 4 Skadges too many". I think, for us, that sums up how useless this companion is, lol. In my personal experience, I'd have to say Xalek. He's cool to look at, sure (and does "work" for my Inquisitor's style from a rp perspective), but overall... meh. He's too flat of a character, the conversations I have with him are just pointless and empty. I find the "don't make me go" comment he makes when you dismiss him to be interesting... but there's nothing we get about him that supports why he'd say this. If they just developed him more, I think it'd help. Though he's also a bit useless from an Assassin standpoint; his dps blows and I don't need a tank. I actually like Ashara the way she is, though I wish we got more dialogue options to sway her further from her Jedi teachings (convincing her to embrace the emotional outbursts for example). But other than that.... I honestly prefer her as my apprentice companion to Xalek, at least she's a little more three dimensional. And puts out better dps.