So, having opened this MK2 up, I can't help but notice that it's an astonishingly easy reg to service. I compare it to Atomic M1, which has been sold to me by LDS years ago, and which requires at least two specialized tools and way more o'rings to be serviced. With service being a recurring expense, is there really a benefit in holding on to such complicated and balanced first stages, or can they be just ditched in favor of simple and cheap to service MK2, for recreational diving? Especially if the second stage is balanced?