i don't think i can vote in this one...i've known about and have appreciated shokotan for much much longer, and have more of a 'feeling' for her personality (her 'weirdness'
which is why we love her), so for that reason i have more of a connection to her, but aya's super cute (i don't really know much about her personality aside from the few youtube vids i've seen of her, and with her being an anime voice actress, to this day i don't know what her actual speaking voice sounds like - sort of like phil hartman
i saw one vid where she did several different voices, which added to the confusion... so i don't know if she was doing a character or what... we've all seen the pics of shokotan's bugs and cats and (sometimes disturbing) manga drawings...if this was based purely on looks, i'd have to choose aya - but if it was based on more than just looks, i'd have to choose shokotan based on her weirdness