Try this one in have been using the same one for the last year only the replace the needle and nozzle and has never let me down.
https://www.scalemodelshop.co.uk/product/0-3-mm-double-action-airbrush-scale-model-shop-sms-092
where do you think im planning on getting one from? .....in no hurry til after crimbo when i start doing some hotrods