A notary writes a notarial will. The notary is responsible for making sure that all the formalities have been satisfied. A notarial will is more difficult to contest, but it costs more to write.
The notary must:
The notary keeps the original copy of the will, so the heirs do not have to go looking for it. The notary also registers the will in the Registre des dispositions testamentaires et des mandats du Québec (Quebec Register of Wills and Mandates).
A notarial will is more expensive than a holograph will or a will made before witnesses. However, it does not need to be probated, which can cost a lot.
A notarial will is also more difficult to contest in court. The notary has already made sure that the testator was capable and not under any pressure.
Each person decides which type of will they prefer.