I've owned a number of rubber hunting boots over the years. My favorite by far are LaCross Burleys. I currently own two pair. One uninsulated and the other with 800 grams of thinsulate.
The worst boots were a pair of Itasca's that I purchased about three years ago. They don't have the ankle support that the LaCross give you. They are also are noisy when walking. I still have them but seldom wear them. I also had a pair of Rocky's that were a comfortable boot but split open by the end of their first season.
You can't go wrong with LaCross!