In your shoes I would (and did) look at Ko2s and Conti A/Ts in 275/65/18. I have E rated KO2s on my 3/4T pickup and like them, but ended up going with stock size Michelin LTX on the 100. I just couldn't think of any reason NOT to given how capable, quiet, comfortable and durable they have been on everything we've had them on previously.