best tyres for 4x4

Bridgestone Dueler (693's I think), Cooper ST's or Goodyear Wrangler A/T's would all be good choices from my experience (personal, friends etc).

You'll get what you pay for and there's a million things to consider before selecting the appropriate tyre. Doubtful you'll get one that'll satisfy 100% of 4x4 needs.

I personally run Wrangler MTR's on my 80 series but they'll cost heaps and I live in a totally different environment so while they suit me fine they may not do so for your neighbour.

Beetle42,
Stick some BFG Long Trails on you won't go far wrong. Not to sure about the Coopers anymore I'm getting a lot of negative reports about them, a lot of our club members are now going back to the good old BFG All Terrains, they don't seem to do any less K's than the Coopers and you don't have to get all the checks done at the tyre centers to comply with the warranty. The BFG's have the three ply side walls which can come in handy. There are squillions of threads about tyres. Kumo's are quite a soft compound tend to be a bit noisy, this depends on the tread pattern of course.