Feel free to wear whatever brand you favour in the dojo but T.K.A. recommends Blitz equipment as it's good quality and well priced. T.K.A. has an account with Blitz so may be able to get what you need at a better price and also save you on postage fees if part of a bulk order.
When ordering a gi make sure that you choose the correct size according to your height and if it's your first gi make sure that it comes with a white belt.
For children we suggest buying a gi that leaves room for them to grow into, probably the next size up. The arms and legs can be folded or temporarily sewn up.
For sparring, safety pads for the hands and feet are also required and sensei Matt has noticed that the next size up of these from blitz is often a better fit.