Champion is the only way to go. I've had one for 20 years and a couple years ago I had a problem with some parts I didn't keep tight. Champion helped me out real quick and no charge.I'm considering a Champion WheelyBird 2 or 3 or similar priced unit.
Would appreciate any experience or opinions. My sons are both grown and moved out so my old school manual spring thrower resetter/loader is not around anymore.