As already stated, there are loads of threads on here regarding tyres.
Basically, Mud tyres are noisy on the road and don't grip very well in the wet.
AT,s better on the road not so good in extreme conditions in the Mud.
I use mine often in the forest, I run on AT's never got stuck where I coudn't engage diff lock and reverse out.
I currently have General Graber AT2's and I think they are very good. Good on the road, good in snow, quiet and grip well in the wet.
On a recent trip across the Sahara in Morocco all the guys running on General Grabers had no problems. One guy was running BF goodrich AT's and the tread shreaded on them quiet badly, If they were mine I would have taken them back for a refund. He covered the same terain as we had.
Money wise, you get what you pay for. There are cheaper tyres around but I find when you take everything into account the General Grabers AT2's work out very well. Noticably better in the wet. They only have to help you prevent one accident and they will have paid for themselves.
https://www.youtube.com/watch?v=YZ6wssG7VBw&index=25&list=FLIWizlxh0TAfVe8CIKx8ZHA