I personally do not like martingale collars... if they are not fitted correctly it is easy for a dog to slip this collar.
The breeder of our show dobe recommended a hemp collar:
http://www.planetdog.com/ProductInfo...EECE%20COLLARS
He obviously does not have the same type of coat than a poodle, but these collars came highly recommended to us. The collar is lined with fleece to protect the coat and they also sell matching leashes. I've never owned a more comfortable leash-collar set... the leash is easy on your hands and it's honestly the best thing I've ever spent money on. I LOVE it!