Am averaging about 2 years per pair for my Mayaris. Have tried both the Birko-Flor and oiled leather, but no apparent difference in durability. I do wear them pretty much constantly in the summer, but I feel like everyone else seems to get more than a couple of years out of theirs... It's specifically the toe-post bit that comes away from the sole, IYSWIM, but I love this particular 'model' and don't really want to switch! Could I be unwittingly abusing them somehow?! 