As a former fitness instructor we always knew NOT to recommend the shape up or toning shoes for anyone that had any balance problems. Like someone recovering from a stroke or injury. You are MORE likely to fall when you are wearing those because they are less stable. The idea is that you engage more muscles to stay stable. Our brains don't need any more tricks thrown at us.

I say find a very comfortable shoe, perhaps new balance or any quality walking shoe that feels good on your feet and then enjoy your walk.
Su seb