Replacement Tires

We just got back from the factory; if you get a chance, tour the factory - it's really neat. We just bought a 2007 3023 in January. The dealer replaced the plumbing side tire with an AKURET HF188 (15") load range E tire after a blow out when returning from auction. The door side tire is likely the original Goodyear Marathon (2006 date on tire) load range D. Internet research has mixed emotions on all trailer tires. I want to replace the Goodyear and I'm thinking of going with an E load range to match the AKURET and wondering if anyone has any input on going to E and AKURET. I saw lots of references to tires discussions on the forum but for the life of me I can't find a whole discussion (I'm attributing this to operator error). Thanks!