Had a set of 15/31/10.5 BFG M/T's on my Pajero and they are a craking tyre. I ended up changing them for a set of 15/33/12.5 Kuhmo KL71's which were also an excellent tyre and was no more noisy than the BFG's despite the bigger size.
I though both had excellent road mannors considering they are mud tyres.
Currently got insa turbo special tracks on my disco. Fairy aggressive mud tyre which is excellent off road but very noise on road. Would not advise these if you do alot of on road miles.