Using the right glove for the right task is very important. Nitrile and vinyl gloves both have their intended uses (and are often interchangeable), depending on the tasks.

Nitrile is typically more resistant to chemicals, temperature extremes, oils and fats and are the required level of protection for medical procedures. Vinyl gloves are more resistant to water, oils, and fats but not as durable as nitrile. 

It's important to ask yourself what your specific needs are, and then choose the glove that best fulfills them. If you are looking for a durable, long-lasting industrial glove that will protect you from cuts and abrasions, nitrile gloves will likely be a better choice. If you only require disposable gloves for food handling or light clean-up jobs, vinyl would likely be more appropriate.

In summation, when working around hazardous chemicals or high-risk infection situations, nitrile is the recommended choice. Vinyl is often better for every day, low-risk tasks.