
If your a melee type fighter, she'll keep your flanks clear and watch your rear. Her reluctance to engage in melee keeps her out of your way while she's pelting enemies with frost spikes and the like. Keep a good supply of charged soul gems when traveling with this lady. Good ranged magic, but a one vampire army when equipped with staves. Very quick to spot an ambush, if you keep her close. Most interesting of all followers almost childlike, in her post adolescent curiosity, but one helluva lady in a fight. But she did not have no story besides to be part of a few quests and send you off to kill a few silver hands. Now don't get me wrong I thought Aela was hot. Last but not least she actually has a story. ) and if your an archer she can make your eleven arrows even stronger. (She can bite me any day is all I got to say.

Serana on the other hand can change you to a vampire lord again and again after you have cured yourself.

After your cured your screwed if you wanted to go back. Aela may give her blood to make you a werewolf but apparently she will only do it once. She's the type I'd fall in love with in a heart beat.
