Craigslist sale may be your best bet for your current tires... I don't know that many would want them here. I have the same tires on my truck and I don't wheel but I do go light off-road periodically for fishing/camping/hiking/etc. I can say these tires suck even for that light duty. On-road they're ok, rain performance has been adequate and we don't get enough regular snow here for me to know much about that. The few snows/ices we got last year I was able to handle easily enough, although I chalk that up more to my careful driving than the tires.
BFG makes a good tire, just not sure what type you're looking for. Highway/All season/Touring type? Moderate A/T? Beefy A/T? I'm assuming since you have a Prerunner you're not looking for M/Ts?
I'm looking for a moderate A/T to fit what I do above but don't have any BFGs in my list. For my needs I'm looking at either Michelin LTX AT2 ($$$$), Firestone Destination AT, Hakook Dynapros or Yokahoma Geolanders.
You can find a ton of information about a variety of BFGs and the ones listed above here... lots of threads discussing and comparing them to one another.