I have a Gunson, and a Motive, and wish there were better options on the market for a quality, affordable pressure bleeder.
The Gunson is powered by a compressed air source, like a tire, and works well, but suffers in parts execution. The gaskets are crudely cut, and the tire chuck pops off the hose too easily. But, it was cheap, and more practical to use than the Motive.
The Motive was also relative cheap, but that still meant double what the Gunson cost.
It suffers from its humble origins being derived from a garden sprayer, like many a homebrew solution. For a DIYer, the reservoir is unnecessarily large and bulky, even if one has the need to do all the vehicles in their household fleet in one session. Don't opt the fancy swivel cap, and the stiff tubing used for the hose to the cap will fight you. Like many a sprayer, or other plastic consumer-grade pressure/vacuum vessel, it will lose integrity and need remedy. I see the addition of a tire stem hack in my Motive's future, to allow for an external pressure source, because I don't see the pump going to distance.
Like the Gunson, it will do the job, but I would not consider it a candidate for any personal "favorite tool" honor. At least for most folks, it only needs to be dragged out every two to three years.
But. it is basically a shadetree hack turned into a commercial product, not a tool conceived as a tool in origin. The guys who originally started the company probably did ok, as did the second owner, and I would also assume the current owner, given their history.
To me, the market still lacks a durable, consumer-friendly, but tool-quality alternative that doesn't require the weariness that a potential mishap like a rocket RUD is a probable risk.
It's not rocket science, and doesn't require aerospace-grade parts, but still surely something better, and more bespoke is possible, given the manufacturing capacity available in the world. Who's got some spare startup capital?
