My advise---- let her choose the machine she wants. Sewing machines are sorta like buying a vehicle. Is it comfortable, does it have the options you want and would use or a lot of stuff she wouldn't use? Is the speed fast or too slow, does she like a drop in bobbin or a front load bobbin? So many things to think about. In my humble opinion, take her shopping and let her test drive the machines that appeal to her. I thank you for being a generous and thoughtful husband.