Trailer Tires...trusting the Goodyear Endurance?

I just had a conversation with my local Good Year guy. The Endurance is replacing the Marathon. He still had Marathons on stock but said I should go with the Endurance because of the longer trips I take. Also said the GY has been very good about repairing damage due to blow outs as stated in the above post. He's always given me good advice over the years....