Hi Laurie. I got a pair of Ahnu trail shoes about a month ago and I really like them. I tried several shoes on at REI and these felt great in the store and have continued to work for me on my 5 mile daily walks over the last month. They are a good balance of support, light weight, breathability and stability. Of course, everyone's feet are so different that it is hard to make specific recommendations. That said, I personally prefer a boot on the Camino, for all of the reasons discussed by others in other threads. I got my Ahnu shoes for pack-free walks at home during the hot Arizona summer when my Gore-Tex Salomon Quest 4D GTX Hiking Boots are overkill.
Since you are in the U.S., I am a big advocate of ordering from REI. They have excellent mail order service and will take anything back at any time for a full refund. You can walk in shoes for a week or more if you need to seen how they work for you and still send them back. Before my getting my beloved Salomon boots, I bought an expensive/high quality pair of Asolo boots. On my first walk, they began to shred my heal. I figured that I needed to just break them in more. After a week of walks (40+ miles), my feet were blistered all over. I went to REI and despite the fact that they had clearly been used on trails, the only question they had was "Would you like a refund or to exchange them for something else." That said, we all need to not abuse this wonderful customer service..... I once went to an REI sale where they sell all of the items that have been returned. There was a pair of used boots that I swear had circumnavigated the globe; the tread on the soles was worn to almost nothing and the leather uppers looked as though they had seen 20 years of service in the Roman legions. On the tag it listed the reason for the return as "Gave customer a blister." No other company I know would take back any shoes with even minor wear; REI is the wonderful exception.
As a side note, I noticed that Salomon were by far the most popular choice on the Camino when I walked last year. Might just be that they are easily available in the EU, but I can personally vouch for them.