Well if you like BFGoodrich, they do make a mud-terrain...but so does Firestone, Kumho, Dunlop, Pro-Comp, and Yokohama...and almost all of Interco's (Super Swamper) product line-up is mud-terrain style tires, since that's what they're known for. Goodyear doesn't really have a mud tire...they have a "maximum traction" tire, that's the MT/R, which is proven on rocks but doesn't clean so well in sticky stuff.
Check this out:
http://www.tirerack.com/tires/surveyresults/surveydisplay.jsp?type=ORMT
I myself run into a lot of snow and mud on the trails that are most local to me, and often it's a combination of the two. The reviews off TireRack helped me choose the tire I did. The vast majority of "maximum-terrain" or mud-terrain tires I see around here in Colorado are BFGoodrich Mud-Terrains and Goodyear MT/Rs (I'm talking at least 80%). I have never been one to follow the pack, and I'm the only one I ever see locally running my tires. I love them.
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2003 Limited, Silver - L.O.S.T. # 068957 Rockies
http://www.cardomain.com/ride/2127390/14
2006 Kawasaki KLR650