My understanding (I don't use them) is that zoomers were intended to be used while swimming, not for kick sets. Having said that, almost everyone uses them for kick sets where I train, often because they can't make the kick intervals without them.
I don't use fins very often -- maybe every other week -- but when I do, I use Zura fins. I like them just fine, they are longer than zoomers but not as long as conventional fins.
My understanding (I don't use them) is that zoomers were intended to be used while swimming, not for kick sets. Having said that, almost everyone uses them for kick sets where I train, often because they can't make the kick intervals without them.
I don't use fins very often -- maybe every other week -- but when I do, I use Zura fins. I like them just fine, they are longer than zoomers but not as long as conventional fins.