I'm running muddies and love them however they are noisy once you get up around 80kph and can be a little squirmy at low speeds due to the large tread blocks.
That's not too much of a problem for me as mine isn't a daily driver so I'm happy to live with it.
My advice would be to go for a set of All Terrains with an aggressive tread pattern. Modern AT's as just as good as muddies in the slop and are better to live with day to day.
Here's a pic of mine with the Pintlers