I have Duratracs and they are great tires... I REALLY wanted BFG A/Ts, but couldn't source any, so I waited... Started reading about Duratracs which have a really interesting tread pattern that cleans itself and doesn't get clogged up. I was a bit worried that the A/Ts would pack up with snow/mud (as some of the reviews said) and lose traction, so this was a big plus. So far, driving in the snow, the treads haven't packed up at all. The tires have amazing bite on nearly every surface (except ice) and are really quiet on the highway. I only have about 1000 miles on my set, but they were incredible with the snow, and I am anxious to try 'em this summer!
Not to mention, they look amazing!
As for the sidewall thing, I believe the guy at the tire store told me mine were 5, but I can't remember. They're definitely not 2.