I've had them all and the one I posted works awesome. It's basically a hand vacuum bleeder on steroids. I can bleed all 4 brakes in <10 minutes. It even works great on my Corolla clutch where the line goes UP from the cylinder and its a bugger to bleed. The worst bleeder to use is the ones that apply pressure to the reservoir like the Motive one. I threw that POS away. Anytime the seal is broken at the reservoir it blows brake fluid everywhere.