Thanks for your response.
My question is in the category of "design curiosity". These aircraft have very similar design characteristics. The Aiglon isn't FAA certified so I have no intention of buying an Aiglon but I do have Cherokee 180 flight experience. The only published flight test of the Aiglon that I've found is in French. It's quite a good flight test (I used Google to translate it). However, I'm curious to hear from anybody - preferably an experienced pilot - who has flown both aircraft and can compare the two solely from a flight characteristics point of view.