What is your wife's esthetic sense, and what are your musical preferences? You must first find speaker candidates that satisfy both of these requirements.
What speakers does your wife like based on looks, and what does she dislike? Of the ones she likes, are there any that sound the way you want them to, especially on the music you prefer?
What speakers does your wife like based on looks, and what does she dislike? Of the ones she likes, are there any that sound the way you want them to, especially on the music you prefer?