What are you using the tires for? 100% street driving? Off roading? Mixture of the two? Winter only?
Street only - Michelin LTX M/S
Great on the street, extremely quiet, works great on dry pavement, wet pavement and light snow. Also has great wear characteristics (I had 70K on mine and had at least another 10K left. My uncle had a set that lasted over 120K, but he always gets tires to last forever.)
Off Roading - BFGoodrich Mud Terrain - Great in mud, on rocks, deep snow, looks cool. Terrible in rain and on ice and light snow. Loud. OK in dry conditions.
Mixture - BFGoodrich All Terrain - Good on dry pavement, slight slippage in heavy rain (will not hydroplane), decent in light snow, pretty good in deep snow, good for hardpacked trail riding, looks cool (not as cool as MTs, but cool nonetheless). Fair in mud (it isn't great but it'll get you through most times), Ok on rocks, but not great.
Winter - Get a set of ag tires and chains