In the end, assuming money is not a factor, mixing by weight or volume is a personal preference. I recommend anyone who is on the fence to watch the video on the
blog post to make up your own mind (which OP seems to have apparently done already without any coaxing

)
Me? I hate mixing by volume for many reasons, one major one being it requires better eyesight than I have. Did it a few times becuase I bought a DIY kit that had the syringes and all that, but I immediately bought a scale after that. But that's just me. One's preference is one's own preference.