As I see you mention the Look Keo's. My husband really likes them and I was almost heading in that direction until I found out that they cannot be used on mtn shoes (I use them for road riding however). I went with the Speedplay Frogs which was in the running at the time and I cannot say enough good things about them. I like that there is virtually no effort in clipping in or out. When I ride behind my husband and see him clipping in and clipping out I am so happy the decision was made for me by my choice of shoes because it sure looks like he put a lot of force getting in and out. I am also on the smaller side and I think I would have had to put in more effort than I would want to.

As for getting adjusted to the Frogs, it takes getting use to something that works so easily. If that makes sence.

Just another opinion here.

~ JoAnn