I was in the same boat recently, and after considering other's experiences and my own wants, I went with Look Keo 2 Max. So far I really like them.

Did I fall? Yes, at a stop light, and it was no big deal.

Are they hard to walk in? Frankly, that issue is overblown, imo. They aren't that bad. Just today, I had a flat and walked down the block a ways, carrying my bike to a park so I could sit and repair the flat. I didn't have a problem doing that.

The difference in feel is really eye opening. Whatever system you choose, and I don't think you can go wrong with any of the common options, the connection to the bike is different in a very good way. At least I think so.