My husband and I had some migration issue in the past year and sought help from Gunter Eitzinger of Adex. His office may not be the biggest but he is helpful, understanding and always prepares you for the good and the bad. When we had those issues, we have tried several agents. Many agents stated that they couldn't help. He was introduced to us for his superb experience....Not sure if he is the cheapest. but we certainly feel that his wonderful service worth the money that we paid!