I had the Dunlop Radial Rover RTs and they worked good in the snow, rain, and light off roading. However, in mud they clogged up very fast. Weren't that loud either.
I had GY MTRs which were Ok in the snow, Ok in the rain, were good in the rocks, and mud, execpt they would clog up in thick gumbo/clay mud.. They were nice and quiet till they wore a little and then got louder and louder... However, they can take some sidewall abuse.. Mine had some nice cuts and cunks taken out of them down to the steel sidewall belt and they still held air.
I now have Truxus MTs on the truck and they are better then the MTRs on wet street. They are very quiet for now ( keep in mind they are new ).. They did require loads of weight to ballance them but, some of that is due to the rims. Haven't had them in snow or taken them off road yet but, from getting feed back from some friends that run them and have been running them I'm sure that they will do better then the MTRs at pretty much everything except for maybe sidewall strenght and wear... Of course My MTRs cupped like crazy and wore really funny. I would recommend rotation of the MTRs at every oil change and really watch the air pressure in them. Truxus were also cheaper if money is a concern.
I figured I would try the Truxus as I have heard some nice things about them... I don't drive much so the wear isn't really an issue for me.. Oh, and incase you want to know.. The 265/75 16 Truxus weigh 55 pounds each just the tire itself.