My recommendation is that you go to the local shop that sells machines AND offers classes. Look around and get a feel, then take your wife on and let her make the decision. A local dealer that offers classes is your best bet. Think about it this way, would you want your wife to pick out your next car or whatever your hobby is, without your input?
That said BabyLock, and Brother are both great brands. I don't know where you are in Indiana, but if you are near Richmond, the Stitching Nook is a very mice shop that sells machines. You are a very thoughtful husband