The reason the gianelli breaks is because the engine is soft mounted to the frame, and the pipe is hard mounted to the frame and the engine. It will break if you don't get it unmounted from the frame. Give it some time and it'll live up to its reputation. Mine is mounted to the engine only with brackets I welded to the circuit portion.
SHA is your cheapest option. Amals are kinda expensive. Bings just suck. Also, the intake risers are out of stock right now. I need to send some more to treats.