Advantages /disadvantages sharp nozzles?

[peirof]

Hi,

I have see, for E3d volcano hotends (cloned), sharp nozzles...

When are recommended? Advantages and disadvantages?

Volcano sharp nozzles

[Veti]

not exactly what you are looking for but here is a comparison of a chinese nozzle vs a e3d nozzle
https://www.youtube.com/watch?v=uvlMeTnjriQ