Teetering between super wide and a fisheye...

My favorite lens for nearly a year has been my ultra-wide angle lens.  It is super wide and gives the distortion without the craziness of a fisheye.  It is my mainstay.  Well, now with the full frame it is one notch further into the world of fisheye - teetering on the edge of over-the-top distortion.  It is like getting a whole new lens.  I have to relearn how to use it!  SUCH fun.