I absolutely HATE the Fortin clank thing. Really doesn't work with the way I play at all. The couple Fortins I played both seemed to have that ultra filtered, exaggerated hi-mid thing that gives that clank.
It also makes me anxious about the Uberschall ultra I have been waiting for; if that is a clank machine, it will be up for sale in a hurry!
With the Hell Razor or Wizards in general, I really wouldn't worry.....while they have a signature punch and response, they are insanely versatile and capable of a pretty large tonal palette. With mine, I can go from head splitting bright, up front and aggressive to chewy, dark and huge....and that is just a W800 model, one of Wizards simple amps. With the Hell Razor, I am betting you can dial both the feel and tone to be anything you want!