I have the original 150 Cuboid and haven't used it much so it is pristine. Just in the past week I updated the firmware so I could get the preheat functionality and it works great. I find it very useful when using plain dual kanthal claptons that come in built at .40ish, they need a purge (pre-heat better) to warm up for a nice saturated vape. With respect to older mods vs newer ones, I fell in like with the Sig 150TC (not that I use TC anymore) back a couple years ago so during the vapeagetton scare I bought another one and have it still new in the box; in the meantime the original one is still my daily banger, it's been through it all and only have had to glue one of the magnets for the door back once. They were made like trucks (maybe better); the new mods today are made cheaper and cheaper and seem to be built, like you said, to last about 6 months.