I come across these clamps everywhere. No matter if you work in film, TV or event - these are the go-to clamps if you're serious about what you do.
Usually with cheaper clamps the rubber grip wears off, or they decide to lose connection with the threads and get really hard stuck, or they simply do not clamp/unscrew themselves.
Not this one though. It's much more thought through, greater quality and decently priced. If you can cope with the size, which makes it sort of clunky (but for good reason), you simply can't go wrong with a Manfrotto Super clamp.