The Perrys have been around for a long time. They are known for being very user friendly, easy to tune and consistent. One will set you back around $40.

That said, I've owned two Super Tigres and once they were broken in, they gave me no trouble. As long as there is no air leakage I can get a reliable idle with my G90 around 2500 rpm (slow enough to not pull the plane) and good throttle transition.