i have the griffin.
its a fine vise to use, the jaws were fine. it does require a hex key, and one does come with the unit.
i found myself unhappy with the o-ring solution at first however in hindsight i found it to be better on the rare chance it would break in an inopportune moment as you could find a rubber o ring alot easier than a proprietary spring.
i'd still use it, but i found no love in rotary tying and preferred the no hassle regal method.
the danvise and this one are basically the same in quality and use, so if there's a feature you like better then go for it. if made in america is that reason, so be it. you won't be dissatisfied any more, or less, than the danvise.