I have been running 4x4's of different ilks for about 20yrs now but have stuck with what I know so my feedback narrow..
BFG AT's the nuts but expensive although I have found them in 265/70-17's
BF Goodrich All Terrain T/A KO 265/70 R17 112R for ÂŁ145 per corner (add ÂŁ15 a corner for fitting...) ÂŁ160 all in not bad!!
I also love the General Grabber AT and AT2's.. I can save ÂŁ20 - ÂŁ30 per corner and I think for their money they are almost unbeatable.. On really slick stuff I may need to lower tyre pressures a bit more than with the BFG's but the walls are solid, tread good, sticky on everything from mud to wet and snow/ice.. and ultra sticky on dry stuff with excellent wear profile.. I got over 18k miles and they still had loads but planned a big off road venture across europe so replaced...
I was part of Berkshire 4x4 response a while back running a Mitsi delica lifted, rear air locked and sump, diff, tank armoured and in that time that little 2.8 pulled trucks out of ditches and even got several arctics up the M25 pre amersham exit hill in packed ice/snow running the grabbers... (damned agency drivers don't even know where the towing points are!!! Tip.. Big metal eye thing screws somewhere into the front of the big tractor unit thing..)..
Those 2 are my picks for everything 4x4.. BFG's if you have the money... Grabbers almost as good and cheap..
In fact I have just bought my own Navara Aventura and am about to re-shoe it.... Damn if I am not leaning towards the grabbers after writing this post LOL.... :eekout
HTH...