Thoughts on drip assist devices?

I’d like to experiment with a drip assist tool. Currently looking at Melodrip vs Hario v60 drip assist. The Hario is much cheaper, and I like the idea of not having to tie up both hands. Of note, I have been using less of my Chemex and more of the Orea big boy for multicup brews. It looks close, but I think the Hario drip assist might fit on big boy without falling in. Do you all think that these drip assists will have a bigger or smaller impact on these bigger multicup brews? Is channeling a real concern with the Hario and a bigger brew bed? What if I just rotate it between pours? How much are you adjusting grind size for these?