Chris Short is kind of a fixture in the hobby. Not only does he run one of the best rocketry supplies stores in the hobby, he is a Tripoli BOD and can be found at launches throughout the year.
Chris' Rocket Supplies carries motors from manufacturers such as Aerotech, Cesaroni, Estes and Loki Research. They carry kits from many of the major manufacturers, electronics from Altus Metrum, Jolly Logic, Marsa, Perfectflite and more. He also carries an extensive supply of research components.
If you haven't been to their website, do yourself a favor and check it out. They are a great source for your Rocket needs!
Chris' Rocket Supplies
Phone: (850) 554-6531