Yokohama Tires

My son in-law called me this morning said he bought 6 Yokohama Tires for his 1998 Endeavor DP. He called yesterday said they wanted $2400 for 4 Michelin tires out the door, then this morning he called and said he bought 6 Yokohama for $1850 out the door I think his tires are 235, he asked me what I thought of the tires I said what difference does it make what I think he has already bought them, I tried to get him to buy Hankook tires I just purchased 4 for my MH. What do most of you think of the Yokohama Tires if you have any experience with these tires. Thanks Roy