Hi Dale,
I see you are in Charlotte, you are pretty close to me.
I have had the BigHorns at Brown Mountain, Brushy Mountain Park, and on the Hatfield McCoy Trails in WV and they were fantastic. As others stated they are not a true mudder tire (and don't claim to be) BUT, they easily take me thru anything at all of those locations. They do have an advantage over a true mud tire, the thread is non directional, so if you get into a mud hole and can't go forward you can usually back out since the tread works both ways and the lower reverse will let you spin the heck out of them.
They are excellant at everything else, unless you are going to be wallowing in mud pits most of the time you will be VERY happy with them.
Dave