I've had Yokohama Geolandar A/T's (31x10.5) on my '96 Explorer for 9 months now, and I think they are excellent. They have a more aggressive tread pattern than the BFG A/T's but are just as quiet. Superb wet traction, and good off-road as well. I highly reccomend them.
For a more subtle tire with a great ride and long wear, I also had the Dunlop Radial Rover RV's (30x9.5) for 2 1/2 years before the Geolandars, and was very happy with those as well.
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Cheers,
Andrew B.
1996 Ford Explorer 4x4 (slightly modified)
BC, Canada