Well, Im not sure if my observations of the CAE vise count for anything, but I have been tying since the sixties on a variety of vises and this is the one I have liked the most. At the moment I cannot fault it, other than the price, it equal, if not better due to the tungsten carbide insert in the jaws, than the LAW that I was given to try for a while.
All reviews are subjective. You won't find an objective review of any vise. There were some fairly early ngative reviews of the CAE early on, possibly because it was a poor copy of a LAW vise. Maybe they've cleared those complaints up by now.
I liked the TRV if only it didnt have a couple of glaring problems, one of which has since been fixed. I think it was released a bit early and not fully developed. But I object to having pay full price to be a beta tester. Is the CAE or the Pro Vise or the LAW any better than the TRV? Thats purely subjective and the TRV is the cheapest of the bunch. Add a decent 4lb base from eBay and youve got a very good tool.
I might add Ive got a $50 Regal knock off from eBay and the flies I tie on that are every bit as good as my CAE, however its not so easy or nice to tie on, particularly with smaller flies