Craig's List is your friend. Figure out what your needs are first and then worry about type of bike. At 10 miles, almost anything will work. You could pick up a used Mountain bike and put some slicks on it and would be in good shape or even a hybrid. I have a Trek 7300 I use on occasion to ride to work, it perfect for that.

Visit some local shops and find the size that right, take some test rides, research, get a buddy that is knowledgeable to help and watch Craig's List