Aela can be a follower too. --- Gamertag: starocean980; Diamond: 3093-3567-8307 Black: 3396-2858-6065
The topic askes "Companion", but I belive this was a mistake to mean follower. darkentity says "Aela" for she is the sexiest "Companion" but he cotinues to say he is undecided or not well enough informed to pass judgement on the sexiest follower. he's not saying Aela is not a follower.
Also IMO Aela is the sexiest companion and/or follower in the game.