The Flux injectors are definitely the ones to get. They may only be 40hp, but from what I gather they work better than big sticks. Better atomization, less smoke, and they work great with stacked boxes.

Another feature of the F1 sticks is that Don uses a better material than the OEM tips. They withstand greater pressure w/o sustaining damage. Most other companies are just modding stock Bosch tips.... No thanks.