Dyson vs Shark (or something else?) for paddle brush smoothing

Hello! I am specifically interested in smoothing my hair out with a paddle heat brush, I don't think curls hold onto my hair, so I will not likely be using these tools for curling. Just to smooth out my already straight(somewhat wavy) hair and defrizz, bring some volume.

I have watched a couple of videos (although they were tiktok videos made by youngsters with amazing hair) and the dyson smoothing brush seemed to be amazing!

Is Shark equivalent to Dyson in this regard? Is it work purchasing either of these for my use case?
Or are there any other options I can explore? Especially dual voltage options?

Thank you thank you!