I have never used the AON option but I deal with Price Waterhouse who, in my opinion, are one of the best in the business. I have never had a problem moving in or out. Usually when I want to buy or sell, my order is filled by the time I go back to check it. This is providing it is a realistic order. If I put anything at all out at market....Bang! Gone! Have to go check on the boys. Will talk later.