i've looked into this myself and have yet to find anything with an aggresive enough pattern for my liking. Ebay has some good pics but pics don't really do justice for a tire.
I'm running wanli's right now, they have pretty good grip and seem to be doing pretty well for the price compared to my old toyo's. If I can remember
I'll get some pics tomorrow if you want.
I going put on some retreads this week the tread is a little more aggressive than the ones pictured above but not to aggressive and they are only $108 although my tires are a different size 225/70 19.5 that is what came on my 08 F-450