Welcome Adam,
The best choice between Cessna and Piper for your training will be the one which is most affordable and convenient to you, so you'll fly more. There are differences, and many pilots have a preference, but either one will get you up and learning! The Cessna 150/152 is a little more gust sensation, so will home your skills just a little better in windy landings. The low wing Pipers float a little more on landing, so will make you more precise about your approaches. All good skills to have, and either type will teach you...