Nitrile gloves are much more resistant than Vinyl gloves, but more expensive.
The biggest differences are in elasticity and mechanical resistance: for this reason vinyl gloves are less sensitive and break more easily, even with a simple finger press.
Even the glove’s porosity is less controllable during production, thus reducing the protection against nitrile gloves when in contact with body fluids and / or chemicals.
Vinyl having no “accelerators” (present in nitrile production compounds) has less chance of causing IV type hypersensitivity reactions or contact allergies.