Are handheld milk frothers as good as countertop machines?

For cold foam and quick drinks, reviewers across r/nespresso and r/espresso say handheld wands like the Maestri House LunaFro and Zulay make excellent foam in seconds. The trade-off is that handhelds don't heat milk, so you'll need to warm it separately, while automatic countertop units like the Aeroccino or Breville heat and froth in one step.