Celo, good for you, for fully including your wife in the process! My suggestion is, don't be in a hurry - ENJOY the quest together!
I can't begin to predict what speakers lie within the intersection of what you like and what she likes. If the visual appeal is indeed a high priority for her, flip though some of your audio magazines together and that should give you some general ideas.
And maybe the two of you would enjoy a weekend together at an audio show?
Best of luck to both of you, wherever your quest may lead.
Duke