I've owned both & liked both. We could discuss the pros/cons ad infinitum without ever touching upon the real issue: fear of the unknown. Might I suggest that your wife does not have enough information to draw a conclusion at this juncture?
I would offer a quid-pro-quo arrangement. Tell her you will defer to her decision 100% AFTER she takes the lessons. After that, my good man, it may be necessary for you to "take one for the team"?
I hope you are earnestly able to turn the corner & move forward? Life's too short to quibble over the small stuff.
/CC