I"ve heard good things about the yokohama geolander , don't think you went wrong there.
Actually, I think the local MB Dealer has put a number of them on MB's and had good feed back.

They did price me out the Dunlap Grand Tracks at my 50 K service, Seems like they were about $550 mounted.

Ties dealer told me that the Dunlaps are just a cheap Good Year!!.....I really don't know, except I did not have good luck with them.