Yesterday I did an inventory of my engines and compared it to what engines I used in 2023. Then I determined what engines I need for 2024. I started off at AC Supply. They now have a good selection of Aerotech and Quest composite motors at a very good price. I got some C11-5's, E20's, E30's and F67's. The F27's are hard to find but they are on the BMS site. When you see Estes engines they are listed at MSRP. When you add them to your cart, they are discounted by 30%. You don't need to input the AC99 code.