My take about Igbo guys precisely those from Anambra in respect to ur question is this! U hardly would find an Anambrarian marrying from another tribe other than theirs, What is really strange is even among the Igbo's in the east Enugu, Abia, Imo and Eboyi thy prefer Enugu. I have lots of friends from the east, who are from Anambra and to be frank they marry from their state! But that doesn't mean they are wrong, Ur friend shouldn't use that as a point in deciding if the guy is right for her or not