Chris & Patrick
Only thing I know about Headland is that they seemed to start advertising Turkish Properties in the UK papers this year. I went on their website to have a look but must admit that the properties they had were also on many other Agent's websites.
Some sound advice has been sent your way with previous postings. Don't get pressured, have your mind set on why you want a property, and how much you want to spend. It's a big step so do all you can to get it right.
At the end of the day it can't hurt you to talk to Heidi and Keith or any other estate agent before making your mind up. And let's be honest, you can't knock word of mouth recommendations.
Good Luck with whatever you do and whoever you choose to deal with.
Tony Mac