Things I liked: Simple to use... Worked reasonably well for the first three fills, then sprung a leak at the hose connection... Hopefully a rare defect. I''ll get another and see how it goes.
Things I would have changed: Lower the price. Add three inches to the hose. Add a blender screw, hose is too short to unscrew the bottle while attached to the gun rendering the bleed hole useless. A gage would be nice. Threads are a tad course as well.
What others should know: Wrap a rag around the connector when removing to protect your gun from scratches as the quick connector "POPS-OFF"... Not a big deal, but I learned the hard way.