The best machine is the one you bond with. The one where it seems intuitive to you to do all the different functions. Since we all think differently, you may be better off than with what you choose than choosing something a friend recommends. Take the machines for a test drive at the store first. [Hint: I used to teach math.]
One of my machines has lots of stitches and yet I don't use most of them. Stitches are a selling point, not necessarily a buying point.