I've had two sets of BG ATs and they look great but they are so-so in the rain and dry pavement compared to Yokohama Geolandars,Revos or even Nitto TerraGrapplers and the BFGs cost a fair amount more and have no mileage warranty.
The Revos and the Yok AT+IIs also both have 50k treadwear warranty and both have much better daily driver manners but the Yoks are a bit closer to the BFGs when off road and there's a few guys that swear by the Yoks going over the trails in Moab.
I've had two set of the BFGs and they failed to impress me when on road (they hydroplane too easily than other AT tires) and for the cost is just are too much when there's viably competitive tires for much cheaper.
I'm either going with the Yoks or the Nittos on my Runner pretty shortly and while I do like the BFGs aggressive looks they just don't work for me when I spend 90% of my driving on pavement plus everybody and their moms have BFGs so I want to be different.
I priced all these tires (265/75/16 size) on Discount Tire's website and the Revos were at about $650ish and the Nittos (D rated) and Yoks can go out the door for under $670 w/tax while the BFGs would cost over $830 with tax.
I included the road hazard warranties which adds $80 to all the prices so you could save more without the warranties but if you off road a bit then they're worth it.
The website shows that the Nittos are only $9 a tire cheaper than the BFGs D load rated tire but that's for a E load rating Nitto which is a bit much for a 4Runner and the D rating is $122 a tire which is $37 a tire cheaper than the BFGs.