We use Langstroth hive designs here at the ranch. They’re easily managed – well, easily, relative to how difficult it could be otherwise – parts are interchangeable between the hives, and the bees take readily to them. I’d read about Langstroth a bit, but not terribly deeply. As it turns out, I should have: he was apparently quite an interesting fellow, although, sadly, stricken with a mental illness which during his time was not readily treatable.  Fascinating stuff, if you’re a fan of bees and the product they make.