I would say weimeraners are pretty headstrong would not say they are "wild" though. I find a lot of people dont quite know what they are gertting themselves into with a a weimeraner, I love them to bits and was brought up with them but they need someone who knows what they are doing, they are far to clever for their own good
I would agree with noushka about huskys and also would say malamutes are very similar. Have you got a breed in mind?