I get along very well with the Interco Vampire EDL most of the year.  Even with some pavement use the big lugs last a long time. I do not like to get stuck and they pretty well pull through most anything without having to get too rough on the machine.  Not sure how the non-EDL Vampire compares. 

Can't say I've found anything I really like for the dry summer months.  In the past the old 589 tires were decent, but the last set didn't live up to past experiences.  I've just been burning through peoples factory take off tires I pick up on craigslist or from the local dealer.  Manure, thorns, and gravel eat through them like they're junk.