I have ran the BFG A/T's on a few trucks and I love em. In my experience, in the mud, not as good as a m/t (duh) but otherwise have been great on/off road IMO.

 

Thanks to all who weighed in with tire opinions. I think I will go with the BFG's.

 

Hey there, it sounds like you're mind's all made up, but I thought I'd toss another opinion in the ring. I've had BFG AT KO's in the 30x9.50x15 size and I loved the way they looked, the wear, and the performance.
Another tire that is definitely worth considering in the pacific northwest is the Bridgestone Dueler Revo. The day I put those on my truck (in Portland), there was no more sliding in the rain with mild acceleration - they are very good in wet weather. They also wear very well, and they are nice and quiet. They even outperformed the BFG's in the snow. It's like they were made for poor conditions, and they do very well offroad. Tons of people on here would endorse the Revo, so I thought I would mention it. If I were to buy based on looks, I'd get the BFG. If I wanted the all-around performance, I'd get the Revo.
Good Luck!

 

Thanks for the tip, 4biker. I'll give the revo's a look over. The tread on the Big O's will last me until the rain sets in in mid-October.

 

Although you didn't list it as an option.. I'd have to say go with the BFG M/Ts. I had a set that were 305/70/16s and they did awesome in the rain.. just as good as the BFG ATs I had before IMO.

In Seattle I imagine you guys get a ton of rain, so you don't have issues with really slick roads due to built up oil then light rain like we do here in So Cal. Those are the worst conditions and I have found that is the only time I have to worry about my MTs breaking lose. If there is a significant amount of rain on the road, I've found that the MTs do pretty well. Just drive safe in the rain and you'll be fine with a more aggressive tire if thats what you want.

 

Have a look at the General Grapplers. They look like BFGs but are supposedly better in snow and way cheaper.