I am an ardent Regal fan, but my next vise may also be a J-Vice (from South Africa). I also like the vise from the Czech Republic's Jan Tvrdek, called the "Rotary Vise JT Black," available from Jan Siman.
I am not sure why some manufacturers say "vise" and some say "vice." In America, "vise" is the proper name, although we might also say that fly tying is our "vice!"