I heavily researched tires prior to buying my most recent set of Discoverer AT3s. I drive on Colorado roads in all kinds of conditions - conditions which change on a day to day basis. I've run various pressures to hone in on ride comfort, fuel economy and traction and have found a psi for all conditions. Problem is I can't change my psi every day and have decided to just stick to 34 psi and check every couple weeks. I've loved everything about the tires early on, but as the tires have worn, I've had very poor performance stopping in the snow, especially packed snow. I love Cooper tires and am considering a set of ATWs to get a little better snow performance, but the AT3 just hasn't done it this winter on my Tacoma. On the contrary, my dad has AT3s on his GMC 1500 that he drives in the midwest that have worn great and run well in the snow. Just not the best for my Tacoma. Hope this helps. Again, if you don't have temperature and weather swings like we do on the front range you may be just fine with the AT3 for your all-season, all-terrain driving.
I have worn these tires out at 55,000 miles! They handled really well for me when I lived in the desert. They did great going through sand and mountain trails. Snow they didn't do well on but there wasn't much snow southern Nevada. Would definitely buy again if in the same environment.