Yes this goes around and around... and no there doesnt seem to be a definative answer...
Some say the BFG's are discontinued, but IIRC someone managed to get a set early this year.. so you have to ask a friendly tyre dealer or 3...
Otherwise its a set of winter tyres.. I have a set of semperit van grips (185's), that perform very well in all weathers, but dont do so well on anything more than wet grass really.. they have lasted well on dry summer roads too at motorway speeds.... just about to finish off a set of part worn 195 vredestien transport snows that aid gearing and clearance (thanks Doug

) but they are an old design..
Difficulty id getting anything in the right size's.. 185's are easy enough, but 205's are much harder to find, some have used 195's as they give a bit more ground clearance and are easy enough to get.. but getting a true off road AT in 14 is difficult.. the BFG's were 27/8.5r14 and there are a couple of others available in that size, but not available in the UK..